Powertrain
generic / SAE
P01B4
Alternative Fuel Rail Temperature Sensor Circuit
Generic electrical fault on alternative fuel rail temperature sensor (CNG/LPG/H2 systems).
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number1 / B4
Possible causes
- Sensor failed high
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 80–500 €
- Estimated time: 0.5–2 h
- Component: alt fuel rail temp sensor
- Component: sensor wiring
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012