P01B2
Alternative Fuel Tank A Level Sensor Circuit High
P01B2 is an OBD-II diagnostic trouble code meaning: Alternative Fuel Tank A Level Sensor Circuit High. Common causes: fuel level sensor malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- Incorrect fuel level readings on the dashboard
- Check Engine light comes on
- Problems starting the engine
- Unstable engine operation
Causes
- Fuel level sensor malfunction
- Open or short circuit in wiring harness
- Poor contact in sensor connectors
- Engine control unit (ECU) malfunction
How to Fix
- Check the integrity of the wiring harness and sensor connectors
- Measure the resistance of the fuel level sensor
- Check the voltage in the sensor circuit
- Replace the fuel level sensor if necessary
- Check and replace ECU if necessary
Related codes
Error P01B2 by Vehicle Brand
FAQ
What does the P01B2 code mean?
P01B2 is an OBD-II diagnostic trouble code that indicates: Alternative Fuel Tank A Level Sensor Circuit High
What causes a P01B2 error code?
The most common causes of P01B2 include: Fuel level sensor malfunction; Open or short circuit in wiring harness; Poor contact in sensor connectors; Engine control unit (ECU) malfunction.
How do I fix a P01B2 diagnostic trouble code?
To fix P01B2: Check the integrity of the wiring harness and sensor connectors. Measure the resistance of the fuel level sensor. Check the voltage in the sensor circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P01B2?
Limited driving only, diagnose soon
How much does it cost to fix P01B2?
The estimated repair cost for P01B2 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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