DTC codes
Look up an OBD-II fault code: what it means on every car or on your make, and how to track it down.
How to read a code
- P
- SystemPowertrain
- 0
- Defined bySAE, the same on every car
- 4
- AreaAuxiliary emission controls
- 20
- FaultThe specific fault in that area
Read the code
Note every stored and pending code your scanner shows, such as P0420.
Find it
Search by code or by words. For a manufacturer code (P1, B1, C1, U1) pick your make: its meaning differs by make.
Open the code
Its page explains the symptoms, likely causes, the checks to run and the fixes.
- P200EGeneric · PowertrainCatalyst System Over Temperature Bank 1
- P200FGeneric · PowertrainCatalyst System Over Temperature Bank 2
- P2010Generic · PowertrainIntake Manifold Runner Control Circuit High Bank 1
- P2011Generic · PowertrainIntake Manifold Runner Control Circuit/Open Bank 2
- P2012Generic · PowertrainIntake Manifold Runner Control Circuit Low Bank 2
- P2013Generic · PowertrainIntake Manifold Runner Control Circuit High Bank 2
- P2014Generic · PowertrainIntake Manifold Runner Position Sensor/Switch Circuit Bank 1
- P2015Generic · PowertrainIntake Manifold Runner Position Sensor/Switch Circuit Range/Performance Bank 1
- P2016Generic · PowertrainIntake Manifold Runner Position Sensor/Switch Circuit Low Bank 1
- P2017Generic · PowertrainIntake Manifold Runner Position Sensor/Switch Circuit High Bank 1
- P2018Generic · PowertrainIntake Manifold Runner Position Sensor/Switch Circuit Intermittent Bank 1
- P2019Generic · PowertrainIntake Manifold Runner Position Sensor/Switch Circuit Bank 2
- P201AGeneric · PowertrainReductant Injection Valve Circuit Range/Performance Bank 2 Unit 1
- P201BGeneric · PowertrainIntake Manifold Runner Control Actuator Supply Voltage Low Bank 1
- P201CGeneric · PowertrainIntake Manifold Runner Control Actuator Supply Voltage Low Bank 2
- P201DGeneric · PowertrainIntake Manifold Runner Control Actuator Internal Performance Bank 1
- P201EGeneric · PowertrainIntake Manifold Runner Control Actuator Internal Performance Bank 2
- P201FGeneric · PowertrainReductant Pump A Stuck On
- P2020Generic · PowertrainIntake Manifold Runner Position Sensor/Switch Circuit Range/Performance Bank 2
- P2021Generic · PowertrainIntake Manifold Runner Position Sensor/Switch Circuit Low Bank 2
- P2022Generic · PowertrainIntake Manifold Runner Position Sensor/Switch Circuit High Bank 2
- P2023Generic · PowertrainIntake Manifold Runner Position Sensor/Switch Circuit Intermittent Bank 2
- P2024Generic · PowertrainEVAP Fuel Vapor Temperature Sensor Circuit
- P2025Generic · PowertrainEVAP Fuel Vapor Temperature Sensor Performance
- P2026Generic · PowertrainEVAP Fuel Vapor Temperature Sensor Circuit Low Voltage
- P2027Generic · PowertrainEVAP Fuel Vapor Temperature Sensor Circuit High Voltage
- P2028Generic · PowertrainEVAP Fuel Vapor Temperature Sensor Circuit Intermittent
- P2029Generic · PowertrainFuel Fired Heater Disabled
- P202AGeneric · PowertrainReductant Tank Heater Control Circuit/Open
- P202BGeneric · PowertrainReductant Tank Heater Control Circuit Low