P128C
Fuel Rail Temperature Sensor 1 Signal Message Counter Incorrect
P128C is an OBD-II diagnostic trouble code meaning: Fuel Rail Temperature Sensor 1 Signal Message Counter Incorrect. Common causes: fuel rail temperature sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.
Symptoms
- Check Engine light comes on
- Deterioration of engine performance
- Increased fuel consumption
- Problems starting the engine
- Reduced engine power
Causes
- Fuel rail temperature sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Problems with the engine ECU
- Corroded contacts or damaged wiring
How to Fix
- Check the integrity of the wiring to the sensor
- Check the contacts in the sensor connector
- Check the sensor resistance (compare with the nominal value)
- Replace the fuel rail temperature sensor if necessary
- Check and, if necessary, reflash the ECU
Related codes
FAQ
What does the P128C code mean?
P128C is an OBD-II diagnostic trouble code that indicates: Fuel Rail Temperature Sensor 1 Signal Message Counter Incorrect
What causes a P128C error code?
The most common causes of P128C include: Fuel rail temperature sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Problems with the engine ECU.
How do I fix a P128C diagnostic trouble code?
To fix P128C: Check the integrity of the wiring to the sensor. Check the contacts in the sensor connector. Check the sensor resistance (compare with the nominal value). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P128C?
Yes, but get it checked soon
How much does it cost to fix P128C?
The estimated repair cost for P128C is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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