P0169

P0169-WATER IN FUEL DETECTED FOR TOO LONG

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

The Water-In-Fuel Sensor is attached to the bottom of the fuel filter. The Powertrain Control Module (PCM) 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 PCM 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 four 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. Pre-Diagnostic Troubleshooting Procedure.
OTHER DTCs PRESENT
1. With the scan tool, read DTCs.

Is P2269 displayed?

Yes

- Repair P2269 DTC first.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Powertrain Verification Test.

No

- Drain water from the fuel filter.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Powertrain Verification Test.