Powertrain, generic (extended)

P26C4 Internal Control Module Clutch Pedal Performance

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

On cars with a manual gearbox, the powertrain module reads the clutch pedal through its own sensors, and an independent monitoring path inside the module checks whether that reading is credible. P26C4 is set when this check rejects the pedal information. In Ford's gasoline OBD summaries for 2020–2024 it is a non-MIL code for manual transmissions; the 2024 issue breaks the check down into pedal sensor A, pedal sensor B and the cross-comparison of the two. The pedal state feeds the starter interlock, cruise control cut-off, stop/start and torque handling during gear changes, so these functions may be switched off. Pure circuit faults of the pedal sensors are reported as P08A7, P08B4 and P08B9; P26C4 points to readings that disagree or drop out intermittently.

Likely causes

Worn or misaligned clutch pedal sensor so that sensors A and B disagree
Loose or corroded pedal sensor connector or chafed wiring
Powertrain module software needing an update

Symptoms

  • Cruise control or stop/start not available
  • Engine cranks only reluctantly or not at all with the pedal pressed
  • Service warning without check engine lamp

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€0–500
Time0.5–2 h

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

Parts involved

control moduleclutch switch

Related codes

P08A7P08B4P08B9P26C3

References: fordservicecontent.com, fordservicecontent.com, performanceparts.ford.com.