Powertrain, generic (extended)

P2853 Clutch A Pressure Discharge Performance

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

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.

Likely causes

Clutch A pressure control valve sticking or delivering too little
Leaking seal or piston ring in the clutch A circuit
Low fluid level or clogged filter reducing supply pressure

Symptoms

  • Weak or delayed launch, engine flares
  • Odd gears unavailable, limp-home mode
  • Warning lamp on

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€200–4,000
Time1–12 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

clutch aclutch actuator atransmission fluid

Related codes

P2854P2855P2857P0844P0868

References: gsi.ext.gm.com, fordservicecontent.com.