Howo Fuel System Fault Codes List
See also: Howo Trucks Service Repair Manuals PDF

Howo A7
Table of diagnostic flashing codes for faults of the fuel pump system of Common Rail Diesel engine
| Diagnostic Flashing Code | Fault Code |  
 Description  | 
 
 Actions of Block (Ecu)  | 
 
 Fault  | 
 
 Manifestation of Malfunction:  | 
|  
 
 1  | 
 
 
 P1683  | 
 
 Short Circuit Short On Mass Additional Motor brake Output  | 
 
 
 Alarm Off  | 
 
 
 The “mass” of the output OUT6 37  | 
 
 
 The motor brake function is not working well.  | 
|  
 
 1  | 
 
 
 P1684  | 
 
 
 SC on battery Complementary Motor Brake Output  | 
 
 
 Alarm Burns  | 
 
 
 KZ +In the exit OUT6 37  | 
 
 
 The motor brake function is not working well.  | 
|  
 
 
 
 
 2  | 
 
 
 
 
 
 P1602  | 
 
 
 
 
 Code data Qr Have not been entered  | 
 
 
 
 
 Alarm Burns  | 
 
 
 
 
 Code data Qr Have not been entered (all equal zero)  | 
 
 
 
 Lower output power and Increase of toxic emissions, increase of engine noise and emissions of white Smoke  | 
|  
 
 
 
 
 2  | 
 
 
 
 
 
 P0602  | 
 
 
 
 
 Data Code Qr Wrong  | 
 
 
 
 
 Alarm Burns  | 
 
 
 
 Code size Qr Incorrect Eeprom) Kqrsw Shows 0, 1, 2  | 
 
 
 
 Lower output power and Increase of toxic emissions, increase of engine noise and emissions of white Smoke  | 
|  
 
 
 
 
 2  | 
 
 
 
 
 
 P1601  | 
 
 
 
 Defining data for code Qr Incorrect (change definition Code Qr Wrong  | 
 
 
 
 Alarm not lit, the system does not work  | 
 
 Defining data For Code Qr Incorrect (for example, wrong order 40.80, 120, 140). This will not happen in mass production.  | 
 
 
 
 Lower output power and Increase of toxic emissions, increase of engine noise and emissions of white Smoke  | 
|  
 
 
 
 3  | 
 
 
 
 
 P0607  | 
 
 
 Fault Cpu. Monitor the malfunction of the integrated circuit.  | 
 
 The alarm is lit, the cruise Control does not work, RTO stopped, fuel supply limit 70%.  | 
 
 
 Malfunction of the additional Cpu (Monitoring the computer of the main Ecu)  | 
 
 
 Lower output power and Increased toxic emissions, increased engine noise and engine stalls  | 
|  
 
 
 
 3  | 
 
 
 
 
 P0606  | 
 
 
 
 Fault Cpu, malfunction of the main Cpu  | 
 
 
 Alarm Burns Cruise control is not It’s working Rto MtplNovilos, fuel supply limit 70%.  | 
 
 
 Malfunction of the main Cpu (Getting Signal Additional faults Ecu)  | 
 
 Reduced output power and increased toxic emissions, increased engine noise and engine stalls  | 
|  
 
 
 
 3  | 
 
 
 
 
 P0601  | 
 
 
 Check the area specified by the flashing code and errors  | 
 
 
 Alarm Burns Cruise control is not It’s working Rto MtplNovilos, fuel supply limit 70%.  | 
 
 
 Ecu Constantly spends Circular Check the area specified by the flashing code  | 
 
 Reduced output power and increased toxic emissions, increased engine noise, and engine stalls  | 
|  
 
 
 5  | 
 
 
 
 P0686  | 
 
 Malfunction of the main relay Relay Zaliplo in Closed Able  | 
 
 
 
 Alarm Burns  | 
 
 
 When the relay does not work, the voltage is above 16 v.  | 
 
 When the ignition is switched off, the fault alarm continues to burn  | 
|  
 
 6  | 
 
 
 P0217  | 
 
 Coolant temperature exceeds upper limit  | 
Alarm not lit, cruise control is not Works, LimitedFuel supply 70%. |  
 The coolant temperature exceeds the upper limit of 107 C.  | 
 
 
 Overheating  | 
|  
 
 
 7  | 
 
 
 
 P0219  | 
 
 
 Engine Exceeds Limit Momentum  | 
 
 Alarm Malfunction Not lit And cruise control is disabled  | 
Warning When Speed exceeds 3000; When Frequency
 Rotation Below 2800, Warning Disappears  | 
There are no obvious malfunctions (when the engine speed is Above 2900 rpm) | 
|  
 
 8  | 
 
 
 U0073  | 
 
 Error ECU CAN1  | 
 
 Alarm Off  | 
 
 “Mass” of wires 157 CAN1H and 158 CAN1L  | 
|
|  
 9  | 
 
 U1001  | 
 
 Error ECU CAN2  | 
 
 Alarm Burns  | 
“Mass” of wires 95 CAN2H And 96 CAN2L | |
|  
 
 9  | 
 
 
 U0121  | 
 
 Abs Disconnected from the bus CAN  | 
The fault alarm is lit and the cruise control is disconnected |  
 Abs Disconnected from the bus CAN  | 
|
|  
 
 9  | 
 
 
 U0155  | 
 
 Device CAN Disconnected From Tires CAN  | 
The fault alarm is lit and the cruise control is disconnected |  
 Device CAN Disconnected from the bus CAN  | 
|  
 
 11  | 
 
 
 P0118  | 
 
 High coolant temperature sensor signal  | 
 
 The fault alarm is lit and the cruise control is disconnected  | 
 
 
 Break Signal wire Circuit 155Ad7  | 
 
 
 Noise and white smoke emissions increase  | 
|  
 
 11  | 
 
 
 P0117  | 
 
 Low temperature sensor signal Cooling Liquid  | 
Alarm Burns Cruise control is not Works, LimitedFuel supply of 70%. |  
 
 EMCO on 55A-GND5 Signal Wires 155Ad7  | 
 
 
 Noise and white smoke emissions increase  | 
|  
 
 
 12  | 
 
 
 
 P0342  | 
 
 
 Sensor G does not yield ripples  | 
 
 The fault alarm is lit and Kruizkontrol Disables  | 
 
 
 
 Gap Chain 120g  | 
 
 Unstable idling speed and poor start-up (possibly with black smoke ejection)  | 
|  
 
 
 
 13  | 
 
 
 
 
 P0337  | 
 
 
 
 Sensor Ne does not yield ripples  | 
 
 
 Fault alarm lights, cruise control Disables And FCCB Disables  | 
 
 
 
 
 Gap Chain 40ne +  | 
 
 
 Unstable idle, poor engine start (possibly with black smoke) and engine Stalls.  | 
|  
 
 
 
 13  | 
 
 
 
 
 P0385  | 
 
 
 No sensor pulses Ne And G  | 
The fault alarm is lit, the cruise control is switched off, FCCB Disables Pto Switched off and the motor brake is switched off |  
 
 
 Simultaneous chain break 40Ne+ and 120G  | 
 
 Unstable idle, poor engine start (possibly with black smoke) and engine Stalls.  | 
|  
 
 14  | 
 
 
 P0183  | 
 
 High oil temperature sensor signal  | 
 
 Alarm Burns  | 
 
 Break Signal wire Circuit 162Ad8  | 
 
 No visible signs of malfunction  | 
|  
 
 14  | 
 
 
 P0182  | 
 
 Low oil temperature sensor signal  | 
 
 Alarm Burns  | 
 
 EMCO on 55A-GND5 Signal Wires 162Ad8  | 
 
 No visible signs of malfunction  | 
|  
 
 
 15  | 
 
 
 
 P2229  | 
 
 
 High atmospheric pressure sensor signal  | 
 
 
 
 Alarm Burns  | 
 
 
 
 SC on 5v internal wire signal Ecu  | 
Increase of white smoke emission, decrease of power, increase of emission toxicity, low engine power on horizontal road | 
|  
 
 
 
 
 15  | 
 
 
 
 
 
 P2228  | 
 
 
 
 
 Low atmospheric pressure sensor signal  | 
 
 
 
 
 
 Alarm Burns  | 
 
 
 
 
 “Mass” of the internal signal wire Ecu  | 
 
 Increase of white smoke emission, decrease of power, increase of emission toxicity, low engine power on horizontal road  | 
|  
 
 16  | 
 
 
 P0113  | 
 
 High ambient air temperature sensor signal  | 
 
 Alarm Burns  | 
 
 Break Signal wire Circuit 32Ad16  | 
 
 Increase Toxic Emissions  | 
|  
 
 16  | 
 
 
 P0112  | 
 
 Low ambient temperature sensor signal  | 
 
 Alarm Burns  | 
 
 EMCO on 55A-GND5 Signal Wires 32Ad16  | 
 
 Increase Toxic Emissions  | 
|  
 
 17  | 
 
 
 P0523  | 
 
 High signal electronic pressure sensor of motor oil  | 
Alarm Burns Cruise control is not Works, LimitedFuel supply of 70%. |  
 
 Emco Of 57 A-VCC4 24 ad12  | 
 
 Reduced engine power and increased fuel consumption  | 
|  
 
 17  | 
 
 
 P0522  | 
 
 Low signal of motor oil pressure electronic sensor  | 
Alarm Burns Cruise control is not Works, LimitedFuel supply of 70%. |  
 
 Short Circuit 24 ad12  | 
 
 Reduced engine power and increased fuel consumption  | 
|  
 
 
 
 17  | 
 
 
 
 
 P0524  | 
 
 
 
 
 Low Pressure Motor Oil  | 
 
 
 The alarm is lit, the cruise control does not work, the RTO does not work, Limited tion 70% fuel supply.  | 
 
 
 
 Low motor oil pressure (defined Mpoilthl_D)  | 
 
 
 Reduced engine power and increased fuel consumption  | 
|  
 
 
 
 
 21  | 
 
 
 
 
 
 P0503  | 
 
 
 
 
 High frequency car speed signal  | 
 
 
 
 The alarm is lit and Cruise control The switch off  | 
 
 
 
 Input Signal 27Vs1 above normal sensor frequency Vs  | 
 
 The cruise control function can not be used on the car. The speed shown by the speedometer is different from the actual rate.  | 
|  
 
 
 
 
 21  | 
 
 
 
 
 
 P0502  | 
 
 
 
 Or circuit break at the sensor inlet Speed Car  | 
 
 
 
 The alarm lights up and the cruise-Control off  | 
 
 
 
 
 Chain Break 27Vs1 and Kz On Mass Or +B  | 
 
 
 It does not matter if this Code Flashing is served on the stand with running drums (stand is not connected to the sensor)  | 
|  
 
 
 
 
 21  | 
 
 
 
 
 
 P0501  | 
 
 
 
 Wrong car speed sensor signal  | 
 
 
 
 The alarm lights up and the cruise control is switched off  | 
 
 
 
 
 Constant on/off state Entrance 27Vs1  | 
 
 
 It does not matter if this Code Flashing is served on the stand with running drums (stand is not connected to the sensor)  | 
|  
 
 
 
 
 22  | 
 
 
 
 
 
 P0122  | 
 
 
 
 Low sensor signal Provisions Accelerator pedal 1  | 
 
 
 
 The alarm light is on and the cruise control is switched off  | 
 
 
 
 
 Signal Wire chain Break 21Ad1  | 
 
 
 Poor quality mounts, low engine power, low engine speed, no function work Motor Brake  | 
|  
 
 
 
 22  | 
 
 
 
 
 P0123  | 
 
 
 
 High sensor signal Provisions Accelerator pedal 1  | 
 
 
 
 The alarm light is on and the cruise control is switched off  | 
 
 
 
 EMCO on 125A-Vcc2 Signal Wires 21Ad1  | 
 
 Poor quality mounts, low engine power, low engine speed, no function work Motor Brake  | 
|  
 
 
 
 22  | 
 
 
 
 
 P0222  | 
 
 
 
 Low sensor signal Provisions Accelerator pedal 2  | 
 
 
 
 The alarm light is on and the cruise control is switched off  | 
 
 
 
 Signal wire chain Break 22Ad2  | 
 
 Poor quality mounts, low engine power, low engine speed, no function work Motor Brake  | 
|  
 
 
 
 22  | 
 
 
 
 
 P0223  | 
 
 
 
 High sensor signal Provisions Accelerator pedal 2  | 
 
 
 
 The alarm is lit and Cruise control Disables  | 
 
 
 
 EMCO on 123A-Vcc3 Signal Wires 22Ad2  | 
 
 Poor quality mounts, low power Engine, Low speed Engine does not work Motor function Brakes  | 
|  
 
 
 
 22  | 
 
 
 
 
 P0121  | 
 
 Poor quality mounts, low power Engine, Low speed Engine does not work Motor function Brakes  | 
|||
|  
 
 
 
 22  | 
 
 
 
 
 P0221  | 
 
 Poor quality mounts, low power Engine, Low speed Engine does not work Motor function Brakes  | 
|||
|  
 
 
 
 22  | 
 
 
 
 
 P0120  | 
 
 Poor quality mounts, low power Engine, Low speed Engine does not work Motor function Brakes  | 
|||
|  
 
 
 
 22  | 
 
 
 
 
 P0220  | 
 
 Poor quality mounts, low power Engine, Low speed Engine does not work Motor function Brakes  | 
|||
|  
 
 
 22  | 
 
 
 
 P2120  | 
 
 Inefficient dual sensor position of the accelerator pedal  | 
 
 
 The alarm is lit and Cruise control Disables  | 
 
 
 Simultaneous circuit break 21Ad1 and 22Ad2 Signal Wires  | 
Poor quality mounts, low power Engine, engine speed, does not work motor function Brakes | 
|  
 
 23  | 
 
 
 P0228  | 
 
 Low Signal From Rto  | 
Alarm Troubleshooting Minute Not lit and RTO not working |  
 Signal Wire Chain Break 23Ad10  | 
 
 Not It’s working Function Rto  | 
|  
 
 23  | 
 
 
 P0227  | 
 
 High Signal From Rto  | 
Alarm The malfunction is lit and Rto Whats |  
 EMCO on 65A-Vcc5 Signal Wires 23Ad10  | 
 
 Not It’s working Function Rto  | 
|  
 
 25  | 
 
 
 P0541  | 
“Mass” of the output wire of the pre-heating relay |  
 Alarm Burns  | 
KZ on Mass Exit 70 OUT19 And 71 OUT20 (When
 Work Glow Heating)  | 
 
 Cold engine runs poorly  | 
|  
 
 25  | 
 
 
 P0542  | 
Rupture of the output circuit of the pre-heating/short-circuit relay on the battery |  
 
 Alarm Burns  | 
 
 Exit circuit Break 70 OUT19 and 71 OUT20 or KZ on +B  | 
 
 Cold engine runs poorly  | 
|  
 
 26  | 
 
 
 P0563  | 
High voltage in the electric network of the car |  
 Alarm Burns  | 
InternallyE Voltage VBB > 4 In the i.e
 НAprjazhenie Systemss > 32 in  | 
 
 Engine BadAbout Starts  | 
|  
 
 26  | 
 
 
 P0562  | 
Low voltage in the electric network of the car |  
 Alarm Off  | 
Internal tension VBB < 1, 9 In the i.e
 Voltage в System < 15 B  | 
 
 Engine Not good Starts  | 
|  
 
 28  | 
 
 
 P1681  | 
 
 Breaking the chain of motor brake or short circuit to “mass”  | 
 
 
 Alarm Burns  | 
 
 Gap Chain 36OUT5 и Kz On Mass  | 
 
 The motor brake function cannot be used normally.  | 
|  
 
 28  | 
 
 
 P1682  | 
Circuit on the battery of the motor brake control chain |  
 Alarm Burns  | 
 
 KZ +In the exit 36OUT5  | 
The motor brake function cannot be used normally. | 
|  
 
 
 37  | 
 
 
 
 P0238  | 
 
 High inlet air pressure sensor signal  | 
 
 Alarm Lit, and cruise control Disables  | 
 
 
 EMCO on 57A-Vcc4 Signal Wires 128Ad3  | 
Low engine power, poor traction characteristics of the engine, especially at full load of the car. | 
|  
 
 
 37  | 
 
 
 
 P0237  | 
 
 Low ambient temperature sensor signal  | 
 
 Alarm Lit, and cruise control Disables  | 
 
 
 Break Signal wire Circuit 128Ad3  | 
Low engine power, poor traction characteristics of the engine, especially at full load of the car. | 
|  
 
 
 37  | 
 
 
 
 P0236  | 
 
 
 Works poorly Inlet pressure sensor Air  | 
 
 Fault alarm is not lit And Cruise control Disables  | 
 
 
 128 Signal WireAd3 is loaded with alternating internal voltage of 5 V.  | 
Low engine power, poor traction characteristics of the engine, especially at full load of the car. | 
|  
 
 39  | 
 
 
 P0234  | 
 
 Pressure sensor signal Inlet Air exceeds the upper limit  | 
The alarm is not lit, Cruise control Does not work, the fuel supply limit is 70%. |  
 
 PIM>TBOPH (MAP) exceeds the upper limit  | 
|
|  
 
 39  | 
 
 
 P0299  | 
 
 Pressure sensor signal Inlet Air below the lower limit  | 
Alarm not lit, Cruise control Does not work, the fuel supply limit is 70%. |  
 
 PIM<TBOPL (MAP) Above the upper limit  | 
|
|  
 
 41  | 
 
 
 P0704  | 
 
 Fault in the chain of the limit switch of the clutch  | 
 
 The alarm is lit and Cruise control Disables  | 
 
 
 Chain Break 77 Sw27 (Car speed > 80 km/h)  | 
Poor quality mounts (cruise control and motor brake not working, etc.) | 
|  
 
 
 43  | 
 
 
 
 P1565  | 
 
 
 Malfunction in Circuit Breaker Cruise control  | 
 
 The fault alarm is lit and Cruise control Disables  | 
Kz On +B Wire 79 switch Cruise Control 2Sw and 92 switch Cruise control 1Sw, Or you want to press During the Long time |  
 
 Abnormal Work Cruise- Control  | 
|  
 
 44  | 
 
 
 P1143  | 
 
 High sensor signal Potentiometer Idle  | 
 
 Alarm Off  | 
 
 EMCO on 65A-Vcc5 Signal Wires 30Ad14  | 
|
|  
 
 44  | 
 
 
 P1142  | 
 
 Low sensor signal Potentiometer Idle  | 
 
 Alarm Off  | 
 
 Signal Wire Circuit Break 30Ad14  | 
|
|  
 
 45  | 
 
 
 P0617  | 
 
 
 Emco Of Akb Switch Ignition  | 
 
 
 Alarm Burns  | 
 
 
 Chain Break 48Sw2 and KZ on the supply voltage on the wire 48  | 
|
|  
 
 46  | 
 
 
 P1530  | 
 
 Jamming switch Engine Stuck or Closed  | 
 
 
 Alarm Burns  | 
 
 
 50SW4 ON  | 
 
 
 Abnormal flame ejection from the engine  | 
|  
 
 47  | 
 
 
 P0850  | 
 
 Circuit malfunction Switch neutral Transfer  | 
 
 The alarm light is on and the cruise control is switched off  | 
 
 Chain Break 66 Sw9 (speed Car > 80 km/h)  | 
 
 Bad work functions RTO, cruise control, etc.  | 
|  
 
 
 51  | 
 
 
 
 P0201  | 
 
 Rupture of the nozzle outlet circuit TWV1 and Detaching Electromagnetic Winding Nozzles  | 
Alarm Burns Cruise control is not It’s working FCCB Not It’s working Feed limit Fuel 70%. |  
 
 
 Gap Chain 103 TWV1  | 
 
 Reduced output power and increased toxic emissions, increased engine noise  | 
|  
 
 
 52  | 
 
 
 
 P0202  | 
 
 Rupture of the nozzle outlet circuit TWV5 and disconnection of the electromagnetic winding nozzle  | 
Alarm Burns Cruise control is not It’s working FCCB Not It’s working Feed limit Fuel 70%. |  
 
 
 Gap Chain 105 twv5  | 
 
 Reduced output power and increased toxic emissions, increased engine noise  | 
|  
 
 
 53  | 
 
 
 
 P0203  | 
 
 Rupture of the nozzle outlet circuit TWV3 and disconnection of the electromagnetic winding nozzle  | 
Alarm Burns Cruise control is not It’s working FCCB Not It’s working Feed limit Fuel 70%. |  
 
 
 Gap Chain 104 Twv3  | 
 
 Reduced output power and increased toxic emissions, increased engine noise  | 
|  
 
 
 
 54  | 
 
 
 
 
 P0204  | 
 
 
 Rupture of the nozzle outlet circuit TWV6 and disconnection of the electromagnetic winding nozzle  | 
 
 Alarm Burns Cruise control is not It’s working FCCB Not It’s working Feed limit Fuel 70%.  | 
 
 
 
 Gap Chain 139 Twv6  | 
 
 
 Reduced output power and increased toxic emissions, increased engine noise  | 
|  
 
 
 
 55  | 
 
 
 
 
 P0205  | 
 
 Rupture of the nozzle outlet circuit TWV3 and disconnection of the electromagnetic winding nozzle  | 
 
 Alarm Burns Cruise control is not It’s working FCCB Not It’s working Feed limit Fuel 70%.  | 
 
 
 
 Gap Chain 137 Twv2  | 
 
 Reduced output power and increased toxic emissions, increased engine noise  | 
|  
 
 
 56  | 
 
 
 
 P0206  | 
 
 Rupture of the nozzle outlet circuit TWV4 and disconnection of the electromagnetic winding nozzle  | 
Alarm Burns Cruise control is not It’s working FCCB Not It’s working Feed limit Fuel 70 |  
 
 Gap Chain 138 TWV4  | 
 
 Lower output power and Increased toxic Emissions and increased engine noise  | 
|  
 
 
 
 57  | 
 
 
 
 
 P2148  | 
 
 
 
 Circuit on the battery of the nozzle chain Com1/KZ on battery Outputs TWV1 3 и 5  | 
 
 
 Alarm Burns Cruise control is not It’s working FCCB Not It’s working Fuel supply limit 50%.  | 
 
 
 Kz On +B Wires 106, 107 nozzles Com1 / Kz On +B On Wires 103, 104 and 105  | 
 
 Reduced output power and increased toxic emissions, increased engine noise  | 
|  
 
 
 
 57  | 
 
 
 
 
 P2147  | 
 
 
 
 “Mass” of the nozzle chain Com1/KZ on the output battery TWV1, 3 and 5  | 
 
 
 Alarm Burns Cruise control is not It’s working FCCB Not It’s working Fuel supply limit 50%.  | 
 
 
 “Mass” in points 106, 107 nozzles Com1 / Kz On +B в Points 103, 104 и 105  | 
 
 Reduced output power and increased toxic emissions, increased engine noise  | 
|  
 
 
 
 57  | 
 
 
 
 
 P2146  | 
 
 
 Break the output circuit under the nozzle load Com1/Break the output circuit under load TWV1, 3, 5  | 
 
 
 Alarm Burns Cruise control is not It’s working FCCB Not It’s working Fuel supply limit 50%.  | 
 
 
 
 Chain Break 106, 107 Nozzles Com1/Chain break 103, 104 и 105  | 
 
 Reduced output power and increased toxic emissions, increased engine noise  | 
|  
 
 
 
 58  | 
 
 
 
 
 P2151  | 
 
 
 
 Circuit on the battery of the nozzle chain Com2/KZ on battery Outputs TWV2 4 и 6  | 
 
 
 Alarm Burns Cruise control is not It’s working FCCB Not It’s working Fuel supply limit 50%.  | 
 
 
 Kz On +B Wires 142, 143 Nozzles Com2 / Kz On +B Wires 137, 138 and 139  | 
 
 Reduced output power and increased toxic emissions, increased engine noise  | 
|  
 
 
 
 58  | 
 
 
 
 
 P2150  | 
 
 
 
 “Mass” of the nozzle chain Com2/KZ on the output battery TWV2, 4 and 6  | 
 
 
 Alarm Burns Cruise control is not It’s working FCCB Not It’s working Fuel supply limit 50%.  | 
 
 
 “Mass” of wires 142, 143 Nozzles Com2/short-circuit on the “mass” of wires 137, 138 and 105  | 
 
 Reduced output power and increased toxic emissions, increased engine noise  | 
|  
 
 
 58  | 
 
 
 
 P2149  | 
 
 Break output circuit Under Load Com2/Load Break circuit TWV2, 4, and 6  | 
Alarm Burns Cruise control is not It’s working FCCB Not It’s working Fuel supply Limit 50% |  
 
 Chain Break 142, 143 Nozzles Com2/Chain Break 137, 138 и 139  | 
Reduced output power and increased toxic emissions increase engine noise | 
|  
 
 
 
 59  | 
 
 
 
 
 P0611  | 
 
 
 
 Fault Chain Charge Condenser  | 
 
 Alarm Burns Cruise control is not It’s working FCCB Not It’s working 50% fuel supply limit and low pressure limit  | 
 
 
 
 
 Internal Fault Ecu  | 
 
 Reduced output power and increased toxic emissions, increased engine noise  | 
|  
 
 
 
 59  | 
 
 
 
 
 P0200  | 
 
 
 
 Fault Chain Charge Condenser  | 
 
 Alarm Burns Cruise control is not It’s working FCCB Not It’s working Fuel supply limit 51% and low Limitations- tion Pressure  | 
 
 
 
 
 Internal Fault Ecu  | 
 
 Reduced output power and increased toxic emissions, increased engine noise  | 
|  
 
 
 
 
 61  | 
 
 
 
 
 
 P0301  | 
 
 
 
 
 Circuit malfunction ToplivopoCylinder 1  | 
 
 
 
 Alarm Not lit, And the system does not work  | 
 
 
 
 The nozzle is damaged, Injection No fuel (definitionBut FCCB)  | 
 
 Engine shaking at idle, low engine power at full load, increased fuel consumption compared to normal conditions  | 
|  
 
 61  | 
 
 
 P0263  | 
 
 It’s working Damper Flow №1  | 
 
 Alarm not litAnd the system does not work  | 
The damper starts to act and the nozzle stops injectioning the fuel | |
|  
 
 
 
 
 62  | 
 
 
 
 
 
 P0305  | 
 
 
 
 
 Circuit malfunction Toplivopo Cylinder Giving 5  | 
 
 
 
 Alarm not lit And the system does not work  | 
 
 
 
 Nozzle damaged, no fuel injection (DetermineLeno FCCB)  | 
 
 Engine shaking at idle, low engine power at full load, increased fuel consumption compared to normal conditions  | 
|  
 
 62  | 
 
 
 P0266  | 
 
 It’s working Damper Flow №5  | 
 
 Alarm not lit And the system does not work  | 
The damper starts to act and the nozzle stops injectioning the fuel | 
|  
 
 
 
 
 
 63  | 
 
 
 
 
 
 
 P0303  | 
 
 
 
 
 
 Circuit malfunction Fuel Cylinder 3  | 
 
 
 
 
 
 Alarm not litAnd the system does not work  | 
 
 
 
 
 
 Nozzle damaged, no fuel injection (DetermineLeno FCCB)  | 
 
 
 Engine shaking at idle, low engine power at full load, increased fuel consumption compared to normal conditions  | 
|  
 
 63  | 
 
 
 P0269  | 
 
 It’s working Damper Flow № 3  | 
 
 Alarm not litAnd the system does not work  | 
The damper starts to act and the nozzle stops injectioning the fuel | |
|  
 
 
 
 
 
 64  | 
 
 
 
 
 
 
 P0306  | 
 
 
 
 
 
 Circuit malfunction Fuel Cylinder 6  | 
 
 
 
 
 
 Alarm not litAnd the system does not work  | 
 
 
 
 
 
 Nozzle damaged, no fuel injection (DetermineLeno FCCB)  | 
 
 
 Engine shaking at idle, low engine power at full load, increased fuel consumption compared to normal conditions  | 
|  
 
 64  | 
 
 
 P0272  | 
 
 It’s working Damper Flow № 6  | 
 
 Alarm not litAnd the system does not work  | 
The damper starts to act and the nozzle stops injectioning the fuel | |
|  
 
 
 
 
 
 65  | 
 
 
 
 
 
 
 P0302  | 
 
 
 
 
 
 Circuit malfunction Fuel Cylinder 2  | 
 
 
 
 
 
 Alarm not litAnd the system does not work  | 
 
 
 
 
 
 Nozzle damaged, no fuel injection (DetermineLeno FCCB)  | 
 
 
 Engine shaking at idle, low engine power at full load, increased fuel consumption compared to normal conditions  | 
|  
 
 65  | 
 
 
 P0275  | 
 
 It’s working Damper Flow № 2  | 
 
 Alarm not litAnd the system does not work  | 
The damper starts to act and the nozzle stops injectioning the fuel | 
|  
 
 
 
 
 
 66  | 
 
 
 
 
 
 
 P0304  | 
 
 
 
 
 
 Fuel circuit malfunction Cylinder 4  | 
 
 
 
 
 
 Alarm not litAnd the system does not work  | 
 
 
 
 
 
 Nozzle damaged, no fuel injection (DetermineLeno FCCB)  | 
 
 
 Engine shaking at idle, low engine power at full load, increased fuel consumption compared to normal conditions  | 
|  
 
 66  | 
 
 
 P0278  | 
 
 It’s working Damper Flow №4  | 
 
 Alarm not litAnd the system does not work  | 
The damper starts to act and the nozzle stops injectioning the fuel | |
|  
 
 
 
 
 67  | 
 
 
 
 
 
 P0193  | 
 
 
 
 High pressure sensor signal in the fuel cell  | 
The alarm is lit, the cruise control does not work, the fuel supply limit is 70%, the pressure limit in the fuel accumulator is up to 80 MPa |  
 
 
 Simultaneous break of signal wires circuit 21Ad1 and 132Ad5  | 
 
 Reduced output power and increased toxic emissions (with white smoke emissions), increased engine noise  | 
|  
 
 
 
 
 67  | 
 
 
 
 
 
 P0192  | 
 
 
 
 Low pressure sensor signal in the fuel cell  | 
The alarm is lit, the cruise control does not work, the fuel supply limit is 70%, the pressure limit in the fuel accumulator is up to 80 MPa |  
 
 
 Simultaneous short-circuit on 134A-Gnd1 121 Signal WiresAd4 and 132Ad5  | 
 
 Reduced output power and increased toxic emissions (with white smoke emissions), increased engine noise  | 
|  
 
 
 
 
 67  | 
 
 
 
 
 
 P0191  | 
 
 
 
 The pressure sensor signal in the fuel accumulator in the Intermediate Range  | 
The alarm is lit, the cruise control does not work, the fuel supply limit is 70%, the pressure limit in the fuel accumulator is up to 80 MPa |  
 
 
 The sensor is defective and the output Voltageremains unchanged  | 
 
 Reduced output power and increased toxic emissions (with white smoke emissions), increased engine noise  | 
|  
 
 
 
 68  | 
 
 
 
 
 P0088  | 
 
 
 The pressure in the fuel accumulator exceeds the upper limit  | 
The alarm is lit, the cruise control does not work, the fuel supply limit is 70%, the pressure limit in the fuel accumulator is up to 80 MPa |  
 
 
 The pressure in the fuel accumulator exceeds 191 Mpa  | 
 
 Reduced power output, increased toxic emissions and white smoke emissions  | 
|  
 
 
 
 69  | 
 
 
 
 
 P1089  | 
 
 
 The pressure in the fuel accumulator exceeds the upper limit  | 
 
 Alarm Burns Cruise control is not It’s working 70% fuel supply limit, fuel cell pressure limit To 80 Mpa  | 
 
 
 Pressure in FuelsBattery exceeds 180 MPa  | 
 
 Reduced power output, increased toxic emissions and white smoke emissions  | 
|  
 
 
 
 71  | 
 
 
 
 
 P0629  | 
 
 
 
 
 Output circuit Pcv1 and SC on battery  | 
 
 
 The alarm is lit, the cruise control does not work, the fuel supply limit is 70%.  | 
 
 
 
 
 Kz On +В Contacts 152, 153 Pcv1  | 
 
 Reduced output capacity and increased toxic emissions, increased fuel consumption  | 
|  
 
 
 
 71  | 
 
 
 
 
 P0628  | 
 
 
 
 Chain break Pcv1 and KZ on Mass  | 
 
 
 The alarm is lit, the cruise control does not work, the fuel supply limit is 70%.  | 
 
 
 
 Chain Break 152, 153 Pcv1 or KZ On Mass  | 
 
 Reduced output capacity and increased toxic emissions, increased fuel consumption  | 
|  
 
 
 
 72  | 
 
 
 
 
 P2634  | 
 
 
 
 
 Output circuit Pcv2 and KZ on battery  | 
 
 
 The alarm is lit, the cruise control does not work, the fuel supply limit is 70%.  | 
 
 
 
 
 Kz On +В Contacts 150, 151 Pcv2  | 
 
 Reduced output capacity and increased toxic emissions, increased fuel consumption  | 
|  
 
 
 72  | 
 
 
 
 P2633  | 
 
 
 
 Output circuit Pcv2 and KZ to “mass”  | 
 
 The alarm is lit, the cruise control does not work, the fuel supply limit is 70%.  | 
 
 
 Chain Break 150, 151 Pcv2 or short-circuit on Mass  | 
Reduced output capacity and increased toxic emissions, increased fuel consumption | 
|  
 
 
 
 73  | 
 
 
 
 
 P0629  | 
 
 
 
 
 EMCO of ACB Power Pcv1 and Pcv2  | 
 
 
 The alarm is lit, the cruise control does not work, the RTO does not work, the fuel supply limit is 50% and the engine is immediately stalls.  | 
 
 
 
 Simultaneous short-circuit on + in wires 152, 153, 150, 151, Pcv1 and Pcv2  | 
 
 Reduced power output, start-up difficulty Engine, increase of flow rate Fuel toxic emissions  | 
|  
 
 
 
 
 
 73  | 
 
 
 
 
 
 
 P0628  | 
 
 
 
 
 
 Break out Circuit Pcv1 and Pcv2 and KZ on Mass  | 
 
 
 Alarm Burns Cruise control is not It’s working RTO not Works, Limited50% fuel supply and the engine is immediately Stalls.  | 
 
 
 
 
 Simultaneous break of the circuit 152, 153, 150, 151, Pcv1 and Pcv2 or short-circuit on Mass  | 
 
 
 Reduced output power, difficulty starting the engine, increased fuel consumption And Increased toxic emissions  | 
|  
 
 
 
 
 76  | 
 
 
 
 
 
 P2635  | 
 
 
 
 The fuel pump load control circuit is overloaded  | 
 
 Alarm Burns Cruise control is not It’s working Fuel supply limit 70%, OgreLimiting pressure in the fuel cell To 80 Mpa  | 
 
 
 
 Mechanical malfunction of fuel pump in overload conditions  | 
 
 Reduced output power and increased toxic emissions, increased engine noise, engine stalls  | 
|  
 
 
 
 
 76  | 
 
 
 
 
 
 P1088  | 
 
 
 
 The fuel pump control system exceeds the permissible pressure  | 
 
 Alarm Burns Cruise control is not It’s working Fuel supply limit 70%, OgreLimiting pressure in the fuel cell To 80 Mpa  | 
 
 
 
 Excess pressure in Fuel Battery Npc> Pfin+ 15 MPa  | 
 
 Reduced output power and increased toxic emissions, increased engine noise, engine stalls  | 
|  
 
 
 
 77  | 
 
 
 
 
 P1266  | 
 
 
 Fuel pump control without load  | 
Alarm Burns Cruise control is not It’s working Fuel supply limit 70%, OgreLimiting pressure in the fuel cell
 To 80 Mpa  | 
 
 
 Fuel pump control system can not increase the angle of injection  | 
 
 Reduced power output, increased toxic emissions and white smoke emissions  | 
|  
 
 
 
 78  | 
 
 
 
 
 P0093  | 
 
 
 Fuel pump control without load, Including Leaks Fuel  | 
Alarm Burns Cruise control is not It’s working Fuel supply limit 70%, OgreLimiting pressure in the fuel cell
 To 80 Mpa  | 
 
 
 
 Fuel pump without load, including fuel leakage  | 
 
 Reduced power output, increased toxic emissions and white smoke emissions  | 

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