Powertrain, generic · Transmission

P08DF Shift Solenoid L Performance/Stuck Off

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

Functional fault of shift solenoid L: the TCM switches the valve on, but speed sensor data show that the intended clutch did not take up, so the valve acts as if stuck off. No manufacturer documents this code publicly. The detection logic is known from the analogue for solenoid A: Ford compares the obtained gear or shift pattern over three solenoid events, and GM's P0751 counts repeated slip of at least 400 rpm in a ratio window that does not match first gear, with the MIL after two trips. Typical causes are a valve jammed by debris, low line pressure or a leaking clutch circuit rather than wiring. CARB requires the check. P08E0 is the stuck-on fault. Expect flare or a missing gear.

Likely causes

Shift spool jammed by debris
Low line pressure or low fluid level
Leak in the clutch circuit fed by the valve

Symptoms

  • Check engine or transmission warning light on
  • Engine flare between gears
  • Gear missing or skipped

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€200–3,500
Time1.5–8 h

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

Parts involved

shift solenoid lvalve body

Related codes

P08D6P08DEP08E0P08E1P0751

References: fordservicecontent.com, gsi.ext.gm.com, law.cornell.edu.