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.
- P1760Mercury · PowertrainTransmission system problems
- P1761Mercury · PowertrainShift Solenoid C Performance
- P1762Mercury · PowertrainOverdrive Band Failed Off
- P1766Mercury · PowertrainShift Solenoid D Performance
- P1767Mercury · PowertrainTorque Converter Clutch Circuit Malfunction
- P1768Mercury · PowertrainPerformance Normal Winter Mode Input Malfunction
- P1770Mercury · PowertrainClutch Solenoid Circuit Malfunction
- P1779Mercury · PowertrainTransmission Control Indicator Lamp Circuit Malfunction
- P1780Mercury · PowertrainTransmission Control Switch Circuit is Out of Self-Test Range
- P1781Mercury · Powertrain4x4 Low Switch is Out of Self-Test Range
- P1782Mercury · PowertrainP/ES Circuit Out Of Self Test Range
- P1783Mercury · PowertrainTransmission Over-Temperature Condition
- P1784Mercury · PowertrainTransmission Mechanical Failure First And Reverse
- P1785Mercury · PowertrainTransmission Mechanical Failure First And Second
- P1786Mercury · Powertrain3-2 Downshift Error
- P1787Mercury · Powertrain2-1 Downshift Error
- P1788Mercury · PowertrainPressure Control Solenoid B Open Circuit
- P1789Mercury · PowertrainPressure Control Solenoid B Short Circuit
- P1795Mercury · PowertrainIdle Switch Circuit Malfunction
- P1804Mercury · PowertrainTransmission 4-Wheel Drive High Indicator Circuit Failure
- P1806Mercury · PowertrainTransmission 4-Wheel Drive High Indicator Short Circuit To Battery
- P1808Mercury · PowertrainTransmission 4-Wheel Drive Low Indicator Circuit Failure
- P1810Mercury · PowertrainTFP Valve Position Switch Circuit Transmission 4-Wheel Drive Low Indicator Short Circuit To Battery
- P1812Mercury · PowertrainTransmission 4-Wheel Drive Mode Select Circuit Failure
- P1815Mercury · PowertrainTransmission 4-Wheel Drive Mode Select Short Circuit To Ground
- P1819Mercury · PowertrainTransmission Neutral Safety Switch Short Circuit To Ground
- P1820Mercury · PowertrainTransmission Transfer Case Clockwise Shift Relay Coil Circuit Failure
- P1822Mercury · PowertrainTransmission Transfer Case Clockwise Shift Relay Coil Short Circuit To Battery
- P1824Mercury · PowertrainTransmission 4-Wheel Drive Clutch Relay Circuit Failure
- P1826Mercury · PowertrainTransmission 4-Wheel Drive Low Clutch Relay Circuit To Battery