The P2694 code indicates that the engine control module has detected a mismatch between the expected performance of the cylinder 9 fuel injector and its stored calibration data. This typically occurs when the injector's actual response does not align with the specific IMA or QR coding assigned to that component.
Internal wear or mechanical failure of the injector prevents it from performing according to its calibration data.
The injector was replaced, but the new calibration code was incorrectly entered or not programmed into the PCM.
Debris or contaminants in the fuel system are obstructing the injector nozzle, altering its spray characteristic.
Corroded pins or frayed wiring at the cylinder 9 injector connector are causing signal interference.
The engine control module is incorrectly processing the injector data or has a corrupted memory sector.
Not necessarily. It can be triggered by a software mismatch if the injector was replaced without the new calibration data being correctly programmed into the PCM.
No, as an incompatible injector can lead to uneven combustion, which may eventually cause damage to the cylinder walls or the catalytic converter.
No. It is very rare for the PCM to be the cause of P2694; the issue is almost always the injector hardware or the data associated with it.