P0169

P0169-WATER IN FUEL DETECTED FOR TOO LONG





For complete wiring diagrams refer to Diagrams/Electrical.


Theory of Operation

The water-in-fuel sensor is attached to the bottom of the fuel filter. The ECM provides a 5-volt reference signal to the water-in-fuel sensor. When the water collected in the fuel filter covers the sensor probes, the water in fuel sensor then pulls the 5-volt reference voltage to ground indicating high water accumulation in the fuel filter. The ECM illuminates the MIL lamp immediately after the diagnostic runs and fails. During this time water in fuel may cause white smoke, loss of power or hard starting. The MIL lamp will turn off after the diagnostic runs and passes in 4 consecutive drive cycles.

- When Monitored:

While the engine is running.

- Set Condition:

Water in fuel light was on for a calibrated amount of time.







Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

Diagnostic Test


1. OTHER DTC'S PRESENT

With the scan tool, read DTCs.

Is P2269 displayed?

Yes

- Repair P2269 DTC first.
- Perform POWERTRAIN VERIFICATION TEST. Powertrain Verification Test

No

- Drain water in fuel.