P01A3
Alternative Fuel Rail Pressure Sensor Circuit
P01A3 is an OBD-II diagnostic trouble code meaning: Alternative Fuel Rail Pressure Sensor Circuit. Common causes: fuel pressure sensor malfunction, open or shorted wiring harness. Estimated repair cost: $56–167.
Symptoms
- Unstable engine operation
- Power reduction
- Increased fuel consumption
- Difficulty starting the engine
Causes
- Fuel pressure sensor malfunction
- Open or shorted wiring harness
- Poor contact in the sensor connector
- Problems with the ECU
How to Fix
- Check the integrity of the sensor wiring harness
- Check the contacts in the sensor connector
- Check sensor resistance (compare with nominal)
- Replace sensor if necessary
- Reset the error and check if it returns
Related codes
Error P01A3 by Vehicle Brand
FAQ
What does the P01A3 code mean?
P01A3 is an OBD-II diagnostic trouble code that indicates: Alternative Fuel Rail Pressure Sensor Circuit
What causes a P01A3 error code?
The most common causes of P01A3 include: Fuel pressure sensor malfunction; Open or shorted wiring harness; Poor contact in the sensor connector; Problems with the ECU.
How do I fix a P01A3 diagnostic trouble code?
To fix P01A3: Check the integrity of the sensor wiring harness. Check the contacts in the sensor connector. Check sensor resistance (compare with nominal). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P01A3?
Limited driving only, diagnose soon
How much does it cost to fix P01A3?
The estimated repair cost for P01A3 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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