Powertrain
generic / SAE
P01B3
Alternative Fuel Tank A Level Sensor Circuit Intermittent/Erratic
Intermittent signal from alternative fuel tank A level sensor. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number1 / B3
Possible causes
- Connector loose or corroded high
- Connector with intermittent contact under vibration low
- Harness routed against vibrating component low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
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References
sae:J2012