Powertrain, generic · Transmission

P0876 Transmission Fluid Pressure Sensor/Switch D Circuit Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

Transmission fluid pressure switches C and D report whether a clutch circuit is pressurised. They are more widespread than A and B: GM's 6L80/6L90 and 6T40/6T70 six-speeds put switch C on the 2-6 brake and D on the 1-2-3-4 clutch, Allison uses them for its third shift valve and its reverse switch, Ram's RFE gearboxes for the clutch pressure switches in the solenoid block. Ford reports pressure faults under its solenoid codes. P0876 means D is electrically fine but implausible. Allison 2006: the reverse switch stays open in R, or does not drop out within 5 to 30 s after engine stop, type B with two trips. Mitsubishi's Jatco CVT sets it when the high clutch switch stays on for 1.5 s while the clutch should be exhausted. On Ram's 68RFE it came with P0871 from mechanical damage.

Likely causes

Valve body worn or dirty, valve sticking
Pressure switch faulty
Mechanical damage: thrust washer, clutch
Fluid level or condition

Symptoms

  • MIL or transmission warning lamp on
  • Limp mode, harsh engagement

Repair estimate

DifficultyHardWorkshop job
Parts and labour€200–3,500
Time1–12 h

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

Parts involved

transmission fluid pressure sensortransmission valve bodytransmission wiringtransmission control module

Related codes

P0875P0877P0878P0871P0868

References: gsi.ext.gm.com, static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov.