P01B1
Alternative Fuel Tank A Level Sensor Circuit Low
P01B1 is an OBD-II diagnostic trouble code meaning: Alternative Fuel Tank A Level Sensor Circuit Low. Common causes: malfunction of the fuel level sensor in the alternative tank, 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
- Malfunction of the fuel level sensor in the alternative tank
- Open or short circuit in wiring harness
- Poor connection or corroded contacts
- ECU malfunction
How to Fix
- Check the fuel level sensor for damage
- Check wiring harness and connections for breaks or corrosion.
- Measure the sensor resistance and compare with factory values
- If necessary, replace the sensor or repair the wiring harness
- Reset the error and check if it returns
Related codes
Error P01B1 by Vehicle Brand
FAQ
What does the P01B1 code mean?
P01B1 is an OBD-II diagnostic trouble code that indicates: Alternative Fuel Tank A Level Sensor Circuit Low
What causes a P01B1 error code?
The most common causes of P01B1 include: Malfunction of the fuel level sensor in the alternative tank; Open or short circuit in wiring harness; Poor connection or corroded contacts; ECU malfunction.
How do I fix a P01B1 diagnostic trouble code?
To fix P01B1: Check the fuel level sensor for damage. Check wiring harness and connections for breaks or corrosion.. Measure the sensor resistance and compare with factory values. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P01B1?
Limited driving only, diagnose soon
How much does it cost to fix P01B1?
The estimated repair cost for P01B1 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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