P2267 indicates the Powertrain Control Module (PCM) has detected an abnormally high voltage signal from the water-in-fuel (WIF) sensor circuit. The WIF sensor detects water accumulation in the fuel filter or tank, commonly found on diesel engines. When the sensor signal exceeds the expected range, this code is set.
The sensor itself is the most common cause - internal electrical failure can cause the signal to stay high continuously, indicating water presence even when none exists.
Damaged wiring, corroded connectors, or a short-to-voltage condition on the sensor signal circuit can cause artificially high readings at the PCM.
The sensor may be functioning correctly and detecting legitimate water accumulation in the fuel filter or tank, which is a real concern in diesel engines.
A weak or open ground circuit for the sensor can cause voltage fluctuations and false high readings at the PCM.
Contaminated diesel fuel or debris affecting sensor operation can trigger the code.
The Powertrain Control Module itself is an unlikely cause and should only be considered after all other possibilities are ruled out.
Yes, but it should be diagnosed promptly. If water is actually present in the fuel system, continuing to drive can cause severe fuel system damage including injector failure.
No. Water-in-fuel sensors are almost exclusively installed on diesel engines. On gasoline engines, this code would typically indicate a wiring or sensor issue if present at all.
No. The PCM is almost never the cause of P2267. This is a classic example of misdiagnosis - the water-in-fuel sensor, wiring, or actual water in the fuel system is the culprit in the vast majority of cases.
Diagnostic costs vary by location and shop. A new water-in-fuel sensor typically costs $50-200 depending on the vehicle. If the issue is simply water in the fuel, draining the filter may resolve it at minimal cost.