P27C5Pressure Control Solenoid P Control Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P27C5 reports an open control circuit on solenoid P. GM's Corvette dual-clutch table 23OBDG07 tests synchronizer actuation valve 3 for this while its low-side driver (a TLE8242 chip) is off: an intact coil pulls the sense pin up towards battery voltage, whereas without a load the driver manages to hold it in a window of about 1.7 to 3.0 V. If that persists for 150 ms after the output has been off for over 5 ms, the code sets as Type A, with battery voltage 8.75-18 V and no P0882/P0883 present; 24OBDG07 retains it. Ford's 2024 table lists open load of SPV3 on the TR9070 as P27C5. Look for a broken wire, an unplugged connector or an open coil.
- What you may notice
- MIL on immediately
- Shifts on rods 3 and 4 in A-to-B direction not possible
- Limp mode with restricted gears
- Likely causes
- LikelyOpen winding in solenoid P
- PossibleConnector not latched or pin pushed back
- PossibleBroken control wire between TCM and solenoid
- 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.