Fault code database
Search every documented OBD-II code, filter by vehicle or by system.
The total includes general codes, manufacturer-specific definitions and references without an identified make. Vehicle filters use only recorded catalogue associations. Make totals can overlap and cannot be added together.
General code
Four Wheel Drive (4WD) Switch Circuit
Transmission & drivetrain · Transmission selector inputs
4WD selection switch: A fault is reported in the named circuit; the definition does not identify which component causes it. The code concerns the four-wheel-drive switch signal, not proof that the transfer case or differential is mechanically defective.
General code
Four Wheel Drive (4WD) Switch Circuit Range/Performance
Transmission & drivetrain · Transmission selector inputs
4WD selection switch: The monitored response fails its expected range or performance relationship, rather than specifying one failed component. The code concerns the four-wheel-drive switch signal, not proof that the transfer case or differential is mechanically defective.
General code
Four Wheel Drive (4WD) Switch Circuit Low
Transmission & drivetrain · Transmission selector inputs
4WD selection switch: The electrical input is below its permitted range. This signal-level finding does not by itself establish a mechanical failure. The code concerns the four-wheel-drive switch signal, not proof that the transfer case or differential is mechanically defective.
General code
Four Wheel Drive (4WD) Switch Circuit High
Transmission & drivetrain · Transmission selector inputs
4WD selection switch: The electrical input is above its permitted range. This is an electrical finding, not an instruction to replace the monitored component. The code concerns the four-wheel-drive switch signal, not proof that the transfer case or differential is mechanically defective.
General code
Park / Neutral Switch Input Circuit
Transmission & drivetrain · Transmission selector inputs
Park/Neutral switch input: A fault is reported in the named circuit; the definition does not identify which component causes it. The switch request and the actual driveline engagement are different. Confirm the vehicle wiring and do not bypass starting or engagement interlocks.
General code
Park / Neutral Switch Input Circuit Low
Transmission & drivetrain · Transmission selector inputs
Park/Neutral switch input: The electrical input is below its permitted range. This signal-level finding does not by itself establish a mechanical failure. The switch request and the actual driveline engagement are different. Confirm the vehicle wiring and do not bypass starting or engagement interlocks.
General code
Park / Neutral Switch Input Circuit High
Transmission & drivetrain · Transmission selector inputs
Park/Neutral switch input: The electrical input is above its permitted range. This is an electrical finding, not an instruction to replace the monitored component. The switch request and the actual driveline engagement are different. Confirm the vehicle wiring and do not bypass starting or engagement interlocks.
General code
Drive Switch Input Circuit
Transmission & drivetrain · Transmission selector inputs
Drive switch input: A fault is reported in the named circuit; the definition does not identify which component causes it. The switch request and the actual driveline engagement are different. Confirm the vehicle wiring and do not bypass starting or engagement interlocks.
General code
Drive Switch Input Circuit Low
Transmission & drivetrain · Transmission selector inputs
Drive switch input: The electrical input is below its permitted range. This signal-level finding does not by itself establish a mechanical failure. The switch request and the actual driveline engagement are different. Confirm the vehicle wiring and do not bypass starting or engagement interlocks.
General code
Drive Switch Input Circuit High
Transmission & drivetrain · Transmission selector inputs
Drive switch input: The electrical input is above its permitted range. This is an electrical finding, not an instruction to replace the monitored component. The switch request and the actual driveline engagement are different. Confirm the vehicle wiring and do not bypass starting or engagement interlocks.
