Powertrain
generic / SAE
P0178
Fuel Composition Sensor Circuit Low Input
The flex-fuel composition sensor signal is below the minimum threshold. Likely shorted to ground, open circuit or failed sensor.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number1 / 78
Possible causes
- Signal wire shorted to ground high
- Sensor failed medium
- Connector pins corroded - high contact resistance low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 120–500 €
- Estimated time: 0.5–2 h
- Component: flex fuel composition sensor
- Component: sensor wiring
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012