P01B3
Alternative Fuel Tank A Level Sensor Circuit Intermittent/Erratic
P01B3 is an OBD-II diagnostic trouble code meaning: Alternative Fuel Tank A Level Sensor Circuit Intermittent/Erratic. Common causes: malfunction of the fuel level sensor (circuit a), wiring harness damage. Estimated repair cost: $56–167.
Symptoms
- Inaccurate fuel level readings
- Fuel gauge needle jumps
- Check engine light comes on
Causes
- Malfunction of the fuel level sensor (circuit A)
- Wiring harness damage
- Poor connection or corrosion in connectors
- Circuit Grounding Problems
- Malfunction of the engine control unit (ECU)
How to Fix
- Check the condition of the wiring harness and connectors of the fuel level sensor
- Check the resistance of the fuel level sensor (circuit A) according to the manufacturer's specifications
- Check circuit continuity and grounding
- Check/replace fuel level sensor (circuit A) if necessary
- Clear error codes and check if the error appears again
Related codes
Error P01B3 by Vehicle Brand
FAQ
What does the P01B3 code mean?
P01B3 is an OBD-II diagnostic trouble code that indicates: Alternative Fuel Tank A Level Sensor Circuit Intermittent/Erratic
What causes a P01B3 error code?
The most common causes of P01B3 include: Malfunction of the fuel level sensor (circuit A); Wiring harness damage; Poor connection or corrosion in connectors; Circuit Grounding Problems.
How do I fix a P01B3 diagnostic trouble code?
To fix P01B3: Check the condition of the wiring harness and connectors of the fuel level sensor. Check the resistance of the fuel level sensor (circuit A) according to the manufacturer's specifications. Check circuit continuity and grounding. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P01B3?
Limited driving only, diagnose soon
How much does it cost to fix P01B3?
The estimated repair cost for P01B3 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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