Powertrain, generic · Transmission

P0762 Shift Solenoid C Stuck On

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

A shift solenoid is an electrically switched valve in the valve body; the module checks whether its clutch follows the command by gear ratio, shift time or a pressure switch. P0762 means solenoid C is commanded off but its clutch stays applied. GM's Honda-built five-speed flags a 2–3 shift slower than 0.8 s together with a 4–5 shift faster than 0.8 s, after two trips; the Allison 1000 a pressure switch 3 still applied after 2 s (up to 4 s when cold), after one trip. Ford calls it 'functionally failed on' – the CB26 brake does not release, which ties up the transmission when leaving second or sixth gear. Ford's 10R80 bulletins list it with a leaking clutch cylinder.

Likely causes

Shift spool or proportional valve sticking in the applied position
Clutch not releasing (stuck or burnt)
Solenoid stuck open or leaking
Control wire shorted to ground (permanently powered)

Symptoms

  • Tie-up or jolt on shifts
  • Delayed shifts, engine revs high
  • Limp mode
  • Check engine light

Repair estimate

DifficultyHardWorkshop job
Parts and labour€200–3,500
Time2–12 h

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

Parts involved

shift solenoidtransmission valve bodytransmission wiringtransmission control module

Related codes

P0761P0760P0763P0980P0733P0752

References: gsi.ext.gm.com, gsi.ext.gm.com, newtonnet.co.uk, fordservicecontent.com.