Powertrain

Engine, transmission and emissions-related systems. The largest group by far, and the one tied to the check-engine lamp.

P0xxxStandardised (SAE/ISO)

Defined by the standard, so the meaning is the same on every make. These are the codes this app explains in full.

• P00xxFuel, air metering and auxiliary emission controls5 codes
• P01xxFuel and air metering100 codes
• P02xxFuel and air metering - injector circuits100 codes
• P03xxIgnition system or misfire95 codes
• P04xxAuxiliary emission controls100 codes
• P05xxVehicle speed control, idle control and auxiliary inputs100 codes
• P06xxComputer output circuits and control module100 codes
• P07xxTransmission100 codes
• P08xxTransmission100 codes
• P09xxTransmission and control modules100 codes
• P0AxxHybrid propulsion30 codes
• P0BxxP0B00 – P0BFFby structure
• P0CxxP0C00 – P0CFFby structure
• P0DxxP0D00 – P0DFFby structure
• P0ExxP0E00 – P0EFFby structure
• P0FxxP0F00 – P0FFFby structure

P1xxxManufacturer-specific

Check a source specific to your make and model year. The subsystem digit is still a reliable hint.

• P10xxP1000 – P10FFby structure
• P11xxP1100 – P11FFby structure
• P12xxP1200 – P12FFby structure
• P13xxP1300 – P13FFby structure
• P14xxP1400 – P14FFby structure
• P15xxP1500 – P15FFby structure
• P16xxP1600 – P16FFby structure
• P17xxP1700 – P17FFby structure
• P18xxP1800 – P18FFby structure
• P19xxP1900 – P19FFby structure
• P1AxxP1A00 – P1AFFby structure
• P1BxxP1B00 – P1BFFby structure
• P1CxxP1C00 – P1CFFby structure
• P1DxxP1D00 – P1DFFby structure
• P1ExxP1E00 – P1EFFby structure
• P1FxxP1F00 – P1FFFby structure

P2xxxStandardised (SAE/ISO), extended range

Standardised, but defined after the 2002 reference edition this app ships, so a specific explanation may not be available offline.

• P20xxFuel, air metering and auxiliary emission controls97 codes
• P21xxFuel and air metering100 codes
• P22xxFuel and air metering - injector circuits100 codes
• P23xxIgnition system or misfire48 codes
• P24xxAuxiliary emission controls48 codes
• P25xxVehicle speed control, idle control and auxiliary inputs78 codes
• P26xxComputer output circuits and control module72 codes
• P27xxTransmission96 codes
• P28xxP2800 – P28FFby structure
• P29xxP2900 – P29FFby structure
• P2AxxHybrid propulsion6 codes
• P2BxxP2B00 – P2BFFby structure
• P2CxxP2C00 – P2CFFby structure
• P2DxxP2D00 – P2DFFby structure
• P2ExxP2E00 – P2EFFby structure
• P2FxxP2F00 – P2FFFby structure

P3xxxMixed: manufacturer-specific and standardised

Treat as manufacturer-specific unless a specific explanation is available.

• P30xxP3000 – P30FFby structure
• P31xxP3100 – P31FFby structure
• P32xxP3200 – P32FFby structure
• P33xxP3300 – P33FFby structure
• P34xxAuxiliary emission controls98 codes
• P35xxP3500 – P35FFby structure
• P36xxP3600 – P36FFby structure
• P37xxP3700 – P37FFby structure
• P38xxP3800 – P38FFby structure
• P39xxP3900 – P39FFby structure
• P3AxxP3A00 – P3AFFby structure
• P3BxxP3B00 – P3BFFby structure
• P3CxxP3C00 – P3CFFby structure
• P3DxxP3D00 – P3DFFby structure
• P3ExxP3E00 – P3EFFby structure
• P3FxxP3F00 – P3FFFby structure