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.
- P1106Other · PowertrainDual Alternator Lower Fault/ Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent High Voltage
- P1106Saturn · PowertrainMAP Sensor Circuit Intermittent High Voltage
- P1106Subaru · PowertrainEngine Torque Control Signal 2 Circuit Malfunction
- P1106Volkswagen · PowertrainOxygen Sensor Circuit Bank 2 Sensor 1 Voltage Too Low/Air Leak
- P1107Acura · PowertrainBARO Circuit Low Input
- P1107Buick · PowertrainMAP Sensor Circuit Intermittent Low Voltage
- P1107Cadillac · PowertrainMAP Sensor Circuit Intermittent Low Voltage
- P1107Chevrolet · PowertrainMAP Sensor Circuit Intermittent Low Voltage
- P1107Chrysler · PowertrainMAP Sensor Circuit Intermittent Low Voltage
- P1107Ford · PowertrainDual Alternator Lower Circuit Malfunction Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage
- P1107GM · PowertrainMAP Sensor Circuit Intermittent Low Voltage
- P1107GMC · PowertrainMAP Sensor Circuit Intermittent Low Voltage
- P1107Honda · PowertrainBARO Circuit Low Input
- P1107Infiniti · PowertrainBARO Circuit Low Input
- P1107Lincoln · PowertrainDual Alternator Lower Circuit Malfunction Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage
- P1107Mercury · PowertrainDual Alternator Lower Circuit Malfunction Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage
- P1107Oldsmobile · PowertrainMAP Sensor Circuit Intermittent Low Voltage
- P1107Other · PowertrainDual Alternator Lower Circuit Malfunction/ Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage
- P1107Saturn · PowertrainMAP Sensor Circuit Intermittent Low Voltage
- P1107Subaru · PowertrainAIR System Diagnosis Solenoid Circuit Fault
- P1107Volkswagen · PowertrainOxygen Sensor Heating Circuit Bank 2 Sensor 1 Short To B+
- P1108Acura · PowertrainBARO Circuit High Input
- P1108Buick · PowertrainBARO To MAP Sensor Circuit Comparison Too High
- P1108Cadillac · PowertrainBARO To MAP Sensor Circuit Comparison Too High
- P1108Chevrolet · PowertrainBARO To MAP Sensor Circuit Comparison Too High
- P1108Chrysler · PowertrainBARO To MAP Sensor Circuit Comparison Too High
- P1108Ford · PowertrainDual Alternator Battery Lamp Circuit Malfunction
- P1108GM · PowertrainBARO To MAP Sensor Circuit Comparison Too High
- P1108GMC · PowertrainBARO To MAP Sensor Circuit Comparison Too High
- P1108Honda · PowertrainBARO Circuit High Input