All fuel injectors will wear out during use, and some malfunctions will occur. But most of the faults are minor faults, and some error codes will also appear. If we do not understand these Bosch diesel EFI high-pressure common-rail systems, it is just a small problem and it will consume a lot of time. Therefore, we understand some Bosch diesel EFI high-pressure common-rail systems, which is very important for us.
| Serial number | Fault Code | Description |
| 101 | P0480 | ECU is open to the control line of fan one |
| 102 | P0481 | ECU is open to the control line of fan 2 |
| 103 | P0483 | ECU overheats the internal drive module of the control line of fan 1 |
| 104 | P0484 | The internal drive module of the control line of ECU fan 2 is overheated |
| 105 | P0487 | Throttle valve actuator control line is open |
| 106 | P0488 | The internal drive module of the throttle valve actuator ECU is overheated |
| 107 | P0489 | EGR valve actuator control line is shorted to ground |
| 108 | P0490 | EGR valve actuator control line is shorted to high level |
| 109 | P0500 | Vehicle speed sensor collection hardware error |
| 110 | P0501 | Unreliable vehicle speed sensor signal |
| 111 | P0503 | Vehicle speed sensor exceeds maximum |
| 112 | P0504 | The main and auxiliary brake pedal signals are relatively unreliable |
| 113 | P0513 | The anti-theft signal sent and received is inconsistent |
| 114 | P0520 | The oil pressure signal transmitted from CAN is invalid |
| 115 | P0521 | The oil pressure is too high to be trusted |
| 116 | P0522 | The output voltage of the oil pressure sensor is lower than the lower limit (the wiring is short-circuited to the ground) |
| 117 | P0523 | The output voltage of the oil pressure sensor is higher than the upper limit (open circuit or short circuit to high level) |
| 118 | P0524 | The oil pressure is too low to be reliable |
| 119 | P0530 | The internal receiving circuit of the ECU for the duty cycle air conditioner pressure signal is faulty |
| 120 | P0531 | The duty cycle air conditioner pressure signal cycle exceeds the upper or lower limit or special failure mode |
| 121 | P0532 | The duty cycle of the pressure signal of the duty cycle air conditioner exceeds the lower limit |
| 122 | P0533 | The duty cycle of the duty cycle air conditioner pressure signal exceeds the upper limit |
| 123 | P0562 | Battery voltage is too low |
| 124 | P0563 | Battery voltage is too high |
| 125 | P0571 | The brake pedal signal transmitted from CAN is unreliable |
| 126 | P0575 | Cruise request is not trusted |
| 127 | P0607 | ECU internal control chip reports an error |
| 128 | P060A | ECU internal chip CJ940 communication failure |
| 129 | P060B | ECU internal analog-to-digital conversion module failure |
| 130 | P060C | ECU internal watchdog chip detection error |
| 131 | P0611 | Limited number of injections |
| 132 | P0615 | The ECU is open to the starting motor control line or the drive module is overheated |
| 133 | P0616 | The ECU is shorted to the ground of the control line of the starting motor |
| 134 | P0617 | ECU has a short circuit to the high level of the starter motor control line |
| 135 | P0627 | Open circuit of fuel pre-supply pump control line |
| 136 | P0628 | Short circuit of fuel pre-supply pump control line to ground |
| 137 | P0629 | The fuel pre-supply pump control line is shorted to high level |
| 138 | P062A | The ECU internal output module of the fuel pre-supply pump control line is overheated |
| 139 | P062B | Injector drive chip failure |
| 140 | P062F | ECU internal EEPROM read and write error |
| 141 | P0638 | The feedback signal of the throttle valve does not match the ECU control request |
| 142 | P0642 | Sensor supply voltage 1 is too low |
| 143 | P0643 | Sensor supply voltage 1 is too high |
| 144 | P0645 | ECU is open to the air conditioning control line or |
| 145 | P0646 | ECU has a short circuit to the air conditioner control line |
| 146 | P0647 | ECU has a short circuit to the air conditioning control line to high level |
| 147 | P0650 | ECU output connection failure to OBD fault light (short circuit, open circuit) |
| 148 | P0652 | Sensor supply voltage 2 is too low |
| 149 | P0653 | Sensor supply voltage 2 is too high |
| 150 | P0660 | Variable eddy current ratio actuator control line is open |
| 151 | P0661 | Variable eddy current ratio actuator control line is shorted to ground |
| 152 | P0662 | Variable eddy current ratio actuator control line is shorted to high level |
| 153 | P0670 | The control line of the ECU to the glow plug is open or its drive module is overheated |
| 154 | P0686 | The main relay turns on too early |
| 155 | P0687 | The main relay is turned on too late |
| 156 | P0691 | The control wire of ECU to fan 1 is shorted to ground |
| 157 | P0692 | The control line of ECU to fan 1 is shorted to high level |
| 158 | P0693 | The control wire of ECU to fan 2 is shorted to ground |
| 159 | P0694 | The control line of ECU to fan 2 is shorted to high level |
| 160 | P0698 | Sensor supply voltage 3 is too low |
| 161 | P0699 | Sensor supply voltage 3 is too high |
| 162 | P0704 | Unreliable clutch signal |
| 163 | P0856 | No use |
| 164 | P1007 | No use |
| 165 | P100D | Engine oil temperature and coolant temperature are relatively unreliable |
| 166 | P1011 | The positive deviation of the rail pressure controller exceeds the upper limit |
| 167 | P1012 | The positive deviation of the rail pressure controller seriously exceeds the upper limit |
| 168 | P1013 | Negative deviation of rail pressure controller is lower than the lower limit |
| 169 | P1014 | The fuel pressure value is unreliable when the engine is coasting backwards |
| 170 | P1100 | The air mass flow meter software is too large |
| 171 | P1101 | The analog output voltage of the additional air temperature sensor on the air mass flowmeter is too high or too low |
| 172 | P1102 | The duty cycle output signal of the additional air temperature sensor on the air mass flowmeter is too high or too low |
| 173 | P1103 | The cooling water temperature and oil temperature sensor signals are relatively unreliable |
| 174 | P1106 | The duty cycle output signal cycle of the additional air temperature sensor on the air mass flowmeter is too high |
| 175 | P1107 | The duty cycle output signal cycle of the additional air temperature sensor on the air mass flowmeter is too low |
| 176 | P1109 | No use |
| 177 | P110A | No use |
| 178 | P110B | No use |
| 179 | P110C | No use |
| 180 | P1112 | The water temperature relative to the reliability check of the temperature sensor on the air flow meter reports an error |
| 181 | P1200 | The positive correction amount of injector 1 is too large |
| 182 | P1201 | The negative correction amount of injector 1 is too large |
| 183 | P1202 | The positive correction of injector 2 is too large |
| 184 | P1203 | The negative correction of injector 2 is too large |
| 185 | P1204 | The positive correction amount of injector 3 is too large |
| 186 | P1205 | The negative correction amount of injector 3 is too large |
| 187 | P1206 | The positive correction amount of injector 4 is too large |
| 188 | P1207 | The negative correction amount of injector 4 is too large |
| 189 | P1208 | The positive correction amount of injector 5 is too large |
| 190 | P1209 | The negative correction amount of injector 5 is too large |
| 191 | P120A | The positive correction amount of injector 6 is too large |
| 192 | P120B | The negative correction amount of injector 6 is too large |
| 193 | P120C | The dynamic positive correction amount of injector 1 is too large |
| 194 | P120D | The dynamic negative correction amount of injector 1 is too large |
| 195 | P120E | The dynamic positive correction amount of the injector 2 is too large |
| 196 | P120F | The dynamic negative correction amount of injector 2 is too large |
| 197 | P1210 | The dynamic positive correction amount of the injector 3 is too large |
| 198 | P1211 | The dynamic negative correction amount of injector 3 is too large |
| 199 | P1212 | The dynamic positive correction amount of the injector 4 is too large |
| 200 | P1213 | The dynamic negative correction amount of injector 4 is too large |
