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.
- P1509Saturn · PowertrainIAC System High RPM
- P1510Saturn · PowertrainBack UP Power Supply
- P1511Saturn · PowertrainThrottle Control System Backup System Performance
- P1514Saturn · PowertrainThrottle Body Performance
- P1515Saturn · PowertrainControl Module Throttle Actuator Position Performance
- P1516Saturn · PowertrainThrottle Actuator Control TAC Module Throttle Actuator Position Performance
- P1517Saturn · PowertrainThrottle Actuator Control TAC Module Performance
- P1518Saturn · PowertrainThrottle Actuator Control TAC Module Serial Data Circuit
- P1519Saturn · PowertrainElectronic Throttle Module Low Volts Communication Disable
- P1520Saturn · PowertrainGear Indicator System
- P1521Saturn · PowertrainTransmission Engaged At High Throttle Angle
- P1522Saturn · PowertrainPark Neutral To Drive Reverse At High RPM
- P1523Saturn · PowertrainElectronic Throttle Control Throttle Return
- P1524Saturn · PowertrainTP Sensor Learned CI Throttle Angle Out Of Range
- P1525Saturn · PowertrainThrottle Body Service Required
- P1526Saturn · PowertrainTP Sensor Learn Not Complete
- P1527Saturn · PowertrainTransmission Range Pressure Switch Comparison
- P1528Saturn · PowertrainGovernor
- P1529Saturn · PowertrainHeated Windshield Request Problem
- P1530Saturn · PowertrainIgnition Timing Adjustment Switch Circuit
- P1531Saturn · PowertrainA/C Low Side Temerature Sensor Fault
- P1532Saturn · PowertrainA/C Evaporator Temperature Sensor Circuit Low Voltage
- P1533Saturn · PowertrainA/C Evaporator Temperature Sensor Circuit High Voltage
- P1534Saturn · PowertrainA/C High Side Temperature Sensor Low Voltage
- P1535Saturn · PowertrainA/C High Side Temperature Sensor Circuit
- P1536Saturn · PowertrainA/C System ECT Overtemperature
- P1537Saturn · PowertrainA/C Request Circuit Low Voltage
- P1538Saturn · PowertrainA/C Request Circuit High Voltage
- P1539Saturn · PowertrainAir Conditioning A/C Clutch Feedback Circuit High Voltage
- P1540Saturn · PowertrainA/C System High Pressure