DTC codes / P26xx · Computer and output circuits / P26FC
P26FC indicates that the powertrain control module has detected a fault in the exhaust gas recirculation cooler bypass control circuit for bank 2, specifically that the bypass valve is stuck in the closed position. The computer commands the bypass valve to open or close to regulate exhaust flow through the cooler, but the circuit feedback or position sensor indicates the valve is not moving as commanded, remaining closed when open is requested.
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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