DTC codes / P26xx · Computer and output circuits / P2694
P2694 indicates that the engine control module (ECM) has detected incompatible data for cylinder 9's fuel injector, meaning the injector's calibration or coding information does not match what the ECM expects. This typically occurs after an injector is replaced without proper programming or when the ECM receives corrupted data from the injector circuit.
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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