P0178

Tests 1 - 3:

Tests 4 - 7:

SYMPTOM
P0178 - WATER IN FUEL SENSOR VOLTAGE TOO LOW

WHEN MONITORED
Ignition ON.

SET CONDITION
Low voltage detected at WIF signal circuit at the Engine Control Module (ECM).

POSSIBLE CAUSES
- Water in fuel sensor signal circuit shorted to ground
- Water in fuel sensor signal circuit shorted to sensor ground
- Engine Control Module
- Water in fuel sensor