P120E
Fuel Pressure Sensor Circuit 'A' Excessive Variation
P120E is an OBD-II diagnostic trouble code meaning: Fuel Pressure Sensor Circuit 'A' Excessive Variation. Common causes: faulty fuel pressure sensor, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.
Symptoms
- Unstable engine idling
- Power dips during acceleration
- Increased fuel consumption
- Difficulty starting the engine
- Check Engine Light Is On
Causes
- Faulty fuel pressure sensor
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Problems with the fuel pump or pressure regulator
- Wiring is dirty or damaged
How to Fix
- Check the continuity of the fuel pressure sensor circuit
- Inspect connectors and contacts for corrosion or damage
- Check the functionality of the fuel pressure sensor
- If necessary, replace the fuel pressure sensor
- Check the operation of the fuel pump and pressure regulator
Related codes
FAQ
What does the P120E code mean?
P120E is an OBD-II diagnostic trouble code that indicates: Fuel Pressure Sensor Circuit 'A' Excessive Variation
What causes a P120E error code?
The most common causes of P120E include: Faulty fuel pressure sensor; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Problems with the fuel pump or pressure regulator.
How do I fix a P120E diagnostic trouble code?
To fix P120E: Check the continuity of the fuel pressure sensor circuit. Inspect connectors and contacts for corrosion or damage. Check the functionality of the fuel pressure sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P120E?
Limited driving only, diagnose soon
How much does it cost to fix P120E?
The estimated repair cost for P120E is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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