P27CDPressure Control Solenoid R 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
- P27CD is set when the control circuit of solenoid R appears open, so the module cannot energize the valve. On GM's Corvette with dual-clutch transmission (23OBDG07, again in 24OBDG07) the part is synchronizer actuation valve 4. The test runs with the output switched off: without a coil in the circuit, nothing pulls the sense voltage up to battery level, and it remains between roughly 1.7 and 3.0 V; held for 150 ms, this stores the code as Type A. Ford's TR9070 overview uses P27CD for open load of SPV4. Since valve 4 moves rods 3 and 4 in the B-to-A direction, those shifts become impossible. Causes are mainly a pushed-out terminal, a cut lead or a burnt winding.
- What you may notice
- MIL on
- Shifts on rods 3 and 4 in B-to-A direction not possible
- Limp mode
- Likely causes
- LikelyTerminal pushed out of the connector housing
- PossibleBurnt-out winding of solenoid R
- PossibleCut or broken control lead
- 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.