Powertrain, generic · Transmission

P0867 Transmission Fluid Pressure

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P0867 to P0869 cover the system or line pressure of the gearbox as a whole: a pressure sensor measures it and the control module compares it with the pressure it commands. Faults of the sensor circuit itself have their own codes (Chrysler 68RFE P0932 ff), the single switches A to H have theirs (P0840 ff). Thresholds are not published; the codes are documented in bulletins for the Ram 68RFE and for the Tremec dual clutch of Corvette C8 and Maserati MC20. P0867 is the general pressure fault. GM's Corvette bulletin reads it as 'no system pressure': the pump delivers nothing or the fluid is almost gone, so valve cleaning is pointless and the gearbox needs a mechanical check. The car may lose drive completely.

Likely causes

Fluid level extremely low or leak
Fluid pump or its drive faulty
Pressure regulator or relief valve sticking
System pressure sensor faulty

Symptoms

  • Transmission warning lamp or MIL on
  • Weak or no drive
  • Limp mode, car may be stranded

Repair estimate

DifficultyHardWorkshop job
Parts and labour€150–6,000
Time1–12 h

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

Parts involved

transmission fluid pressure sensortransmission pumppressure control solenoidtransmission valve bodytransmission fluid

Related codes

P0868P0869P0841P0960

References: static.nhtsa.gov, static.nhtsa.gov, law.cornell.edu.