P128F 2014 Chevrolet Silverado Code - Fuel Rail Pressure Sensors 1 and 2 Signals Message Counter Incorrect
Quick Answer
The fuel rail pressure sensor transmits fuel pressure and temperature information by serial data. Common causes include Faulty Fuel Rail Pressure Sensor, Fuel Rail Pressure Sensor harness is open or shorted, Fuel Rail Pressure Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P128F 2014 Chevrolet Silverado indicates Fuel Rail Pressure Sensors 1 and 2 Signals Message Counter Incorrect.
- Common causes
- Common causes include Faulty Fuel Rail Pressure Sensor, Fuel Rail Pressure Sensor harness is open or shorted, Fuel Rail Pressure Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P128F 2014 Chevrolet Silverado Description
What are the Possible Causes of the DTC P128F 2014 Chevrolet Silverado?
- Faulty Fuel Rail Pressure Sensor
- Fuel Rail Pressure Sensor harness is open or shorted
- Fuel Rail Pressure Sensor circuit poor electrical connection
How to Fix the DTC P128F 2014 Chevrolet Silverado?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P128F 2014 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P128F 2014 Chevrolet Silverado Code
1. What does the OBDII code P128F mean on a 2014 Chevrolet Silverado?
P128F indicates that the Fuel Rail Pressure Sensors 1 and 2 are providing inconsistent or incorrect signal message counters to the engine control module (ECM).
2. What are the common symptoms of code P128F in a 2014 Chevrolet Silverado?
Symptoms may include reduced engine performance, poor fuel efficiency, rough idling, difficulty starting, or the illumination of the check engine light.
3. What causes the P128F code to appear in a 2014 Chevrolet Silverado?
Common causes include faulty fuel rail pressure sensors, wiring or connector issues, a malfunctioning ECM, or a problem with the fuel delivery system.
4. Can I drive my 2014 Chevrolet Silverado with a P128F code?
It is not recommended to drive with this code active, as it may lead to engine performance issues or potential damage to the fuel system.
5. How do I fix the P128F code on my 2014 Chevrolet Silverado?
Repairs may involve inspecting and replacing the fuel rail pressure sensors, repairing damaged wiring or connectors, or reprogramming or replacing the ECM if necessary.
6. How can I diagnose the P128F code in my 2014 Chevrolet Silverado?
Use an OBDII scanner to verify the code, then inspect the fuel rail pressure sensors, wiring, and connectors for damage. You may also need a multimeter to test sensor output voltage.
7. How much does it cost to repair a P128F code on a 2014 Chevrolet Silverado?
The cost varies depending on the issue, but replacing a fuel rail pressure sensor typically costs $200-$400, including parts and labor.
8. Can a dirty fuel filter cause the P128F code in a 2014 Chevrolet Silverado?
While a dirty fuel filter may not directly trigger this code, it can lead to inconsistent fuel pressure, which might contribute to sensor-related issues.
9. Do I need to replace both fuel rail pressure sensors if I get a P128F code?
Not necessarily. Diagnose which sensor is faulty, as only one may need to be replaced.
10. Can a software update fix the P128F code on a 2014 Chevrolet Silverado?
In some cases, a software update for the ECM may resolve communication issues between the sensors and the ECM. Consult your dealership or mechanic to confirm.
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