P0883TCM Power Input Signal High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- The TCM power input codes watch the supply voltage of the gearbox module or of its solenoid supply. Without a proper supply all solenoids go dead and the gearbox falls back to its hydraulic emergency gear with maximum line pressure: a fixed gear, harsh engagement, no shifting. Ford's external gearbox modules check a window of 9 to 16 V; GM reports the same under P0562/P0563. P0883 means the supply is too high: Ford sets it above 16 V, continuously and with MIL; GM's counterpart P0563 sets at 18 V. Typical triggers are a failed alternator regulator or a jump start with 24 V. Overvoltage endangers the output stages, so the module may switch the solenoids off.
- What you may notice
- MIL on
- Charging warning or unusually bright lights
- Overvoltage codes in other modules
- Likely causes
- LikelyAlternator voltage regulator faulty (overcharging)
- PossibleJump start with 24 V or charger in boost mode
- PossiblePoor battery ground, regulator measures wrongly
- RareModule measurement faulty
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €100 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.