P08D2Shift Solenoid J Control Circuit Low
- 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 TCM sees too little voltage on the control line of shift solenoid J, typically because the line or the coil is shorted to ground. No manufacturer documents this code publicly; J would be a tenth on/off valve, which none of the known transmission sources assigns. GM's analogue for solenoid A, P0973 on the 6-speed units, fails when the output driver reports a ground short for 1.2 of 1.5 seconds and lights the MIL after one trip; Ford names the same fault on its solenoids a short to ground. CARB requires such circuit checks. P08D3 is the high-side fault, P08D4 the open circuit. The TCM usually switches the valve off and runs a substitute gear.
- What you may notice
- Check engine or transmission warning light on
- Transmission holds a substitute gear
- Harsh or missing shifts
- Likely causes
- LikelyControl wire chafed through and shorted to ground
- PossibleSolenoid coil with internal short
- PossibleDamaged internal transmission harness or lead frame
- RareFaulty output stage in the TCM
- 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.