P2853Clutch A Pressure Discharge 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
- P2853 is set when the pressure measured at clutch A falls short of what the control model predicts. GM's 2023 Corvette dual-clutch table applies it to clutch 1, the odd-gear clutch, as a Type A fault in two ways: the model expects more than 1 bar while the sensor shows under 0.5 bar for 5 s, or the measured value stays below the model by more than a calibrated margin for too long. GM labels this result a pressure discharge fault and requests recovery of the odd-side clutch. Ford's 2024 summary gives the same number to measured odd clutch pressure below target on the TR9070. A real pressure loss weakens or prevents engagement, so launch and odd gears suffer; sensor offset faults have their own codes such as P0844.
- What you may notice
- Weak or delayed launch, engine flares
- Odd gears unavailable, limp-home mode
- Warning lamp on
- Likely causes
- LikelyClutch A pressure control valve sticking or delivering too little
- PossibleLeaking seal or piston ring in the clutch A circuit
- PossibleLow fluid level or clogged filter reducing supply pressure
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €200 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.