OBD-II code · Powertrain (generic)
P08C4 Pressure Control Solenoid M Performance/Stuck Off
Pressure control solenoid M is commanded on but does not produce the expected pressure. Spool stuck closed or hydraulic feed restricted.
Is it safe to drive with P08C4?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySolenoid spool stuck in closed position
- PossibleHydraulic feed restricted by debris
- Less likelyCarbon or debris buildup preventing free movement
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–8 h
- Emissions test
- Usually unaffected
- Parts involved
- Pressure Control Solenoid M, Valve Body
Related codes
- P08BBPressure Control Solenoid L Performance/Stuck Off
- P2714Pressure Control Solenoid D Performance/Stuck Off
- P2732Pressure Control Solenoid F Performance/Stuck Off
- P27B9Pressure Control Solenoid N Performance/Stuck Off
- P27C1Pressure Control Solenoid P Performance/Stuck Off
- P27C9Pressure Control Solenoid R Performance/Stuck Off
- P27D1Pressure Control Solenoid S Performance/Stuck Off
- P27D9Pressure Control Solenoid T Performance/Stuck Off
- P2808Pressure Control Solenoid G Performance/Stuck Off
- P2817Pressure Control Solenoid H Performance/Stuck Off
- P2820Pressure Control Solenoid J Performance/Stuck Off
- P2829Pressure Control Solenoid K Performance/Stuck Off
- P08C1Pressure Control Solenoid L Control Circuit Low
- P08C2Pressure Control Solenoid L Control Circuit High
- P08C3Pressure Control Solenoid M
- P08C5Pressure Control Solenoid M Stuck On
- P08C6Pressure Control Solenoid M Electrical
- P08C7Pressure Control Solenoid M Intermittent
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.