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.
- P1400Jaguar · PowertrainExhaust Gas Recirculation Valve Postion Control
- P1400Lexus · PowertrainSub-TP Sensor Malfunction
- P1400Lincoln · PowertrainDifferential Pressure Feedback Electronic Sensor Circuit Low Voltage
- P1400Mazda · PowertrainDPFE Sensor Circuit Low Input
- P1400Mercury · PowertrainDifferential Pressure Feedback Electronic Sensor Circuit Low Voltage
- P1400Mitsubishi · PowertrainManifold Differential Pressure Sensor Circuit
- P1400Nissan · PowertrainEGRC Solenoid Valve
- P1400Other · PowertrainDPFE Circuit Low Input
- P1400Subaru · PowertrainFuel Tank Pressure Control Solenoid Low Input
- P1400Toyota · PowertrainSub-Throttle Position Sensor
- P1400Volkswagen · PowertrainEGR Valve Circuit Electrical Malfunction
- P1401Generic · PowertrainDPFE Circuit High Input
- P1401BMW · PowertrainHeated Catalyst Current Too High During Heating Bank 1
- P1401Ford · PowertrainDifferential Pressure Feedback Electronic Sensor Circuit High Voltage
- P1401Jaguar · PowertrainExhaust Gas Recirculation Valve Postion Circuit
- P1401Kia · PowertrainEGR Control Solenoid Circuit Signal Low
- P1401Lexus · PowertrainEGR Valve Position Sensor Circuit Malfunction
- P1401Lincoln · PowertrainDifferential Pressure Feedback Electronic Sensor Circuit High Voltage
- P1401Mazda · PowertrainDPFE Sensor Circuit High Input
- P1401Mercedes-Benz · PowertrainEGR Lifting Sender B283
- P1401Mercury · PowertrainDifferential Pressure Feedback Electronic Sensor Circuit High Voltage
- P1401Nissan · PowertrainEGR Temperature Sensor
- P1401Other · PowertrainDPFE Circuit High Input
- P1401Subaru · PowertrainFuel Tank Pressure Control System Performance
- P1401Toyota · PowertrainSub-Throttle Position Sensor Range Performance Problem
- P1401Volkswagen · PowertrainEGR Valve Power Stage Short To Ground
- P1402BMW · PowertrainHeated Catalyst Power Switch Overtemperature Condition Bank 1
- P1402Ford · PowertrainEGR Metering Orifice Restricted
- P1402Kia · PowertrainEGR Control Solenoid Circuit Signal High
- P1402Lincoln · PowertrainEGR Metering Orifice Restricted