DTC codes / P26xx · Computer and output circuits / P26C4
P26C4 is a generic powertrain code that indicates the engine control module (ECM) has detected an internal performance fault within its own clutch pedal monitoring circuitry. The ECM compares signals from the clutch pedal position sensor(s) against expected values and its own internal calculations, and it sets this code when the correlation falls outside the programmed tolerance or when the module's self-test fails.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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