Powertrain codes (P codes)
P codes cover engine, fuel system, ignition, emissions and transmission. We list 7,355 of them, in groups of up to 100.
Most looked-up powertrain codes
- P0420 Catalyst System Efficiency Below Threshold Bank 1
Powertrain code groups
| Group | Area | Main parts | Codes |
|---|---|---|---|
| P00xx | Fuel and air metering and auxiliary emission controls | Engine control module, oxygen sensor wiring, oxygen sensor heater, engine oil | 255 |
| P01xx | Fuel and air metering | Sensor wiring, oxygen sensor wiring, engine control module, catalytic converter | 256 |
| P02xx | Fuel and air metering (injector circuit) | Engine control module, crankshaft position sensor, injector wiring, actuator wiring | 256 |
| P03xx | Ignition system or misfire | Engine control module, sensor wiring, cylinder pressure sensor glow plug, ignition wiring | 253 |
| P04xx | Auxiliary emission controls (catalytic converter, EGR, EVAP) | Engine control module, sensor wiring, actuator wiring, EGR valve | 256 |
| P05xx | Vehicle speed, idle control and auxiliary inputs | Engine control module, sensor wiring, switch wiring, body control module | 256 |
| P06xx | Computer (engine control module) and output circuits | Engine control module, glow plug control module, glow plug, glow plug wiring | 256 |
| P07xx | Transmission | Transmission control module, transmission valve body, transmission clutches, sensor wiring | 256 |
| P08xx | Transmission | Transmission control module, engine control module, wiring harness, sensor wiring | 234 |
| P09xx | Transmission | TCM, wiring harness, auto shift manual switch, gear shift position sensor a | 147 |
| P0Axx | Hybrid propulsion | Wiring harness, bms, hybrid control module, inverter | 256 |
| P0Bxx | Hybrid propulsion | Wiring harness, bms, hybrid control module, aux trans pump control module | 256 |
| P0Cxx | Hybrid propulsion | Wiring harness, bms, hybrid control module, dcdc converter | 256 |
| P0Dxx | Powertrain codes P0D00-P0D99 | Wiring harness, bms, on board charger, hybrid control module | 256 |
| P0Exx | Powertrain codes P0E00-P0E99 | Wiring harness, hybrid control module, bms, dcdc converter | 255 |
| P0Fxx | Powertrain codes P0F00-P0F99 | 1 | |
| P20xx | Fuel and air metering and auxiliary emission controls | Reductant injection valve, exhaust gas temperature sensor, reductant pump, imrc actuator | 256 |
| P21xx | Fuel and air metering | Fuel injector, engine control module, injector wiring, ECM | 256 |
| P22xx | Fuel and air metering (injector circuit) | Nox sensor, oxygen sensor wiring, ECM, alternative fuel injector | 256 |
| P23xx | Ignition system or misfire | Engine control module, sensor wiring, cylinder pressure sensor glow plug, ignition coil | 256 |
| P24xx | Auxiliary emission controls (catalytic converter, EGR, EVAP) | Particulate matter sensor, DPF b2, EVAP pump wiring, DPF b1 | 256 |
| P25xx | Vehicle speed, idle control and auxiliary inputs | Wiring harness, sensor wiring, park lock solenoid, oil control valve | 256 |
| P26xx | Computer (engine control module) and output circuits | Wiring harness, control module, solenoid, oil control valve | 256 |
| P27xx | Transmission | Wiring harness, TCM, valve body, aux trans pump b | 242 |
| P28xx | Transmission | Wiring harness, TCM, ion sense module, valve body | 247 |
| P2Axx | Hybrid propulsion | Wiring harness, afcm, ECM, injection pump | 256 |
| P2Bxx | Hybrid propulsion | Wiring harness, ECM, engine control module, bms | 256 |
| P2Cxx | Hybrid propulsion | Wiring harness, ECM, dcdc converter, bms | 256 |
| P2Dxx | Powertrain codes P2D00-P2D99 | Wiring harness, ECM, bms, starter generator control module | 254 |
| P2Exx | Powertrain codes P2E00-P2E99 | Wiring harness, on board charger, TCM, ECM | 192 |
| P34xx | Powertrain codes P3400-P3499 | Cylinder deactivation solenoid, ECM, wiring harness, lifter | 155 |