DTC P0177-37: Fuel Composition Sensor Circuit Range/Performance - Signal frequency too high: Action
- Prioritized Checks To Perform
- Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
- Refer to electrical circuit diagrams and check the flex fuel sensor circuit for short circuit to ground, short circuit to power, open circuit, high resistance
- Drain off any water in the fuel filter by opening the water drain valve on the fuel filter housing. Replace the contaminated fuel
- Check the security and integrity of the fuel filler cap
- Using the Jaguar Land Rover approved diagnostic equipment, clear the Diagnostic Trouble Code(s) and retest