Technical Definition:
Fuel ComPosition Sensor Circuit Low
Trouble Code: P0178
Address: 0x0178
System: Powertrain
Subsystem: Fuel and Air Metering
Address: 0x0178
System: Powertrain
Subsystem: Fuel and Air Metering
Technical Description:
Possible Causes:
Possible Symptoms:
Fuel Composition Sensor Circuit Low Input
Possible Solutions:
OBD-II Trouble Code Type:
Diagnostic Step:
Tech Notes:
– Flexible Fuel (FF) sensor to Vehicle Power (VPWR) circuit harness open or shorted
– FF to VPWR circuit poor electrical connection
– Open in FF sensor signal circuit
– Short to ground in FF sensor signal circuit
– Fuel contamination
– Short to VPWR in FF sensor batte