Electrical codes for automotive equipment
General
* P0 – Engine and transmission control
* P1 – Motor power supply
* P2 – Fuel supply components
* P3 – Ignition and emissions
* P4 – Additional control systems
* P5 – Cruise control and speed sensors
* P6 – Gearboxes
* P7 – Hybrid vehicles
* P8 – Electrical equipment
* P9 – Transmission control module
Codes by system
Motor control (P0)
* P0100 – Mass air flow (MAF) sensor malfunction
* P0101 – MAF sensor signal too low
* P0102 – MAF sensor signal too high
* P0103 – Mass Air Flow (MAF) Sensor Circuit Malfunction
* P0104 – Manifold absolute pressure (MAP) sensor malfunction
* P0105 – MAP sensor signal too low
* P0106 - MAP sensor signal too high
* P0107 – MAP sensor circuit malfunction
Motor power supply (P1)
* P1100 – Intake Air Temperature (IAT) Sensor Malfunction
* P1101 – IAT sensor signal too low
* P1102 – IAT sensor signal too high
* P1103 – IAT sensor circuit malfunction
* P1104 – Engine Coolant Temperature (ECT) Sensor Malfunction
* P1105 – ECT sensor signal too low
* P1106 – ECT sensor signal too high
* P1107 – ECT sensor circuit malfunction
Fuel delivery components (P2)
* P2100 – Throttle Position Sensor (TPS) Malfunction
* P2101 – TPS sensor signal too low
* P2102 – TPS sensor signal too high
* P2103 – TPS sensor circuit malfunction
* P2104 – Accelerator pedal position (APP) sensor malfunction
* P2105 – APP sensor signal too low
* P2106 – APP sensor signal too high
* P2107 – APP sensor circuit malfunction
Ignition and Emissions (P3)
* P3100 – Bank 1 Oxygen (O2) Sensor Malfunction, Sensor 1
* P3101 – Bank 1 O2 sensor signal too low, sensor 1
* P3102 – Bank 1 O2 sensor signal too high, sensor 1
* P3103 – Bank 1 Sensor O2 Circuit Malfunction, Sensor 1
* P3104 – Bank 2 O2 Sensor Malfunction, Sensor 1
* P3105 – Bank 2 Sensor O2 Signal Too Low, Sensor 1
* P3106 – Bank 2 Sensor O2 Signal Too High, Sensor 1
* P3107 – Bank 2 Sensor O2 Circuit Malfunction, Sensor 1
Additional control systems (P4)
* P4100 – Outside Air Temperature (OAT) Sensor Malfunction
* P4101 – OAT sensor signal too low
* P4102 – OAT sensor signal too high
* P4103 – OAT sensor circuit malfunction
* P4104 – Vehicle Speed Sensor (VSS) Malfunction
* P4105 – VSS sensor signal too low
* P4106 – VSS sensor signal too high
* P4107 – VSS sensor circuit malfunction
Cruise control and speed sensors (P5)
* P5100 – Cruise control servo malfunction
* P5101 – Speed Sensor (SS) Signal Too Low
* P5102 – SS sensor signal too high
* P5103 – Sensor SS circuit malfunction
* P5104 – Steering Wheel Position Sensor (WPS) Malfunction
* P5105 – WPS sensor signal too low
* P5106 – WPS sensor signal too high
* P5107 – WPS sensor circuit malfunction
Gearboxes (P6)
* P6100 – Transmission Input Shaft Speed Sensor (ISS) Malfunction
* P6101 – ISS sensor signal too low
* P6102 – ISS sensor signal too high
* P6103 – ISS sensor circuit malfunction
* P6104 – Transmission Output Shaft Speed Sensor (OSS) Malfunction
* P6105 – OSS sensor signal too low
* P6106 – OSS sensor signal too high
* P6107 – OSS sensor circuit malfunction
Hybrid vehicles (P7)
* P7100 – High voltage electrical control unit (PEU) malfunction
* P7101 – High voltage battery voltage too low
* P7102 – High Voltage Battery Voltage Too High
* P7103 – High Voltage Battery Circuit Malfunction
* P7104 – Electric motor malfunction (MG)
* P7105 – MG power too low
* P7106 – MG power too high
* P7107 – MG circuit malfunction
Electrical equipment (P8)
* P8100 – Body Control Module (BCM) Malfunction
* P8101 – Line voltage too low
* P8102 – Line voltage too high
* P8103 – Power circuit malfunction
* P8104 – Generator fault
* P8105 – Generator output current too low
* P8106 – Generator output current too high
* P8107 – Alternator circuit malfunction
Transmission control module (P9)
* P9100 – Transmission Control Module (TCM) Malfunction
* P9101 – Transmission pressure too low
* P9102 – Transmission pressure too high
* P9103 – Transmission Pressure Circuit Malfunction
* P9104 – Transmission Speed Sensor (TSS) Malfunction
* P9105 – TSS sensor signal too low
* P9106 – TSS sensor signal too high
* P9107 – TSS sensor circuit malfunction