P27D6Pressure Control Solenoid S 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
- P27D6 would indicate that the circuit of solenoid S is still closed but its electrical behaviour does not fit what the module commands. There is no public manufacturer description. On the Corvette dual-clutch transmission GM does compare target and estimated coil current of valve 5 (a 70 % gap held 60 ms, or a 400 mA gap held 300 ms, per 23OBDG07), yet files that result under the high-circuit code P27D8, so P27D6 stays unused there. CARB 13 CCR 1968.2 only sets the general duty to check actuator circuits. If another controller stores it, likely culprits are added resistance at a crimp, a coil whose ohms have drifted with age and heat, or a TCM output stage losing strength.
- What you may notice
- MIL on
- Uneven shifts into rod 5 gears
- Likely causes
- LikelyAdded resistance at a crimp or pin
- PossibleSolenoid S coil resistance out of specification
- RareTCM output stage losing strength
- 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 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.