P01A1
Alternative Fuel Tank A Pressure Sensor Circuit High
P01A1 is an OBD-II diagnostic trouble code meaning: Alternative Fuel Tank A Pressure Sensor Circuit High. Common causes: malfunction of the fuel tank pressure sensor a, open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- Switching to the main fuel type
- Reduced engine power
- Check Engine Light Illuminates
- Unstable operation of the engine using alternative fuel
Causes
- Malfunction of the fuel tank pressure sensor A
- Open or short circuit in wiring harness
- Problems with the sensor connector contacts
- ECU malfunction
- Corrosion or oxidation of contacts
How to Fix
- Check the integrity of the sensor wiring harness
- Check the connections and contacts of the sensor connector
- Measure resistance and voltage at the sensor
- Replace pressure sensor if necessary
- Clean contacts from corrosion
- Check the operation of the computer
Related codes
Error P01A1 by Vehicle Brand
FAQ
What does the P01A1 code mean?
P01A1 is an OBD-II diagnostic trouble code that indicates: Alternative Fuel Tank A Pressure Sensor Circuit High
What causes a P01A1 error code?
The most common causes of P01A1 include: Malfunction of the fuel tank pressure sensor A; Open or short circuit in wiring harness; Problems with the sensor connector contacts; ECU malfunction.
How do I fix a P01A1 diagnostic trouble code?
To fix P01A1: Check the integrity of the sensor wiring harness. Check the connections and contacts of the sensor connector. Measure resistance and voltage at the sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P01A1?
Limited driving only, diagnose soon
How much does it cost to fix P01A1?
The estimated repair cost for P01A1 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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