P08D1Shift Solenoid J Control Circuit Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Set when the control circuit of shift solenoid J is electrically intact but its measured values, usually solenoid current or driver feedback, lie outside the expected window for the commanded state. No manufacturer documents this code publicly. The analogue for solenoid A, P0972, is likewise not used in the GM and Ford sources checked; Ford reports such current faults by its own electrical current check, which flags feedback current out of range for 0.5 seconds. CARB requires output circuits to be checked for faults beyond plain opens and shorts. P08D2 and P08D3 cover low and high circuit voltage, P08D4 an open circuit, P08CF a general electrical fault. Shift quality may suffer because the valve no longer moves as intended.
- What you may notice
- Check engine or transmission warning light on
- Harsh or irregular shifts
- Possible limp mode
- Likely causes
- LikelySolenoid coil resistance out of specification
- PossibleHigh resistance at connector pins or internal harness
- RareUnstable supply voltage to the TCM or solenoid feed
- RareFaulty current sensing in the TCM output stage
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €100 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.