P128F 2014 Chevrolet Silverado Code - Fuel Rail Pressure Sensors 1 and 2 Signals Message Counter Incorrect
Quick Answer
The P128F diagnostic trouble code (DTC) for a 2014 Chevrolet Silverado indicates that the Fuel Rail Pressure Sensors 1 and 2 Signals Message Counter is Incorrect. Common causes include Faulty fuel rail pressure sensors, Wiring or connector issues, Malfunctioning ECM. 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 sensors, Wiring or connector issues, Malfunctioning ECM.
- 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.
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Code P128F 2014 Chevrolet Silverado Description
The P128F diagnostic trouble code (DTC) for a 2014 Chevrolet Silverado indicates that the Fuel Rail Pressure Sensors 1 and 2 Signals Message Counter is Incorrect. This code typically means that the signals from the fuel rail pressure sensors are not being received or interpreted correctly by the engine control module (ECM). Fuel rail pressure sensors play a crucial role in monitoring the pressure of the fuel in the fuel rail, which is essential for the proper functioning of the fuel injection system. When the ECM detects that the signals from these sensors are incorrect or inconsistent, it can lead to a variety of performance issues in the vehicle.
Common Causes of P128F 2014 Chevrolet Silverado
- Faulty fuel rail pressure sensors
- Wiring or connector issues
- Malfunctioning ECM
- Fuel system problems
- Contaminated fuel
Symptoms of P128F 2014 Chevrolet Silverado
- Decreased fuel efficiency
- Rough idling or engine hesitation
- Stalling during acceleration
- Engine misfires
- Check Engine Light illuminated
How to Fix P128F 2014 Chevrolet Silverado
- Diagnose the issue by using a scan tool to read the DTC and check the fuel rail pressure sensor readings.
- Inspect the wiring and connectors for any damage or corrosion, repairing or replacing as needed.
- Test the fuel rail pressure sensors to determine if they are functioning correctly, replacing them if necessary.
- Clear the DTC and reset the ECM to see if the issue is resolved.
- Test drive the vehicle to ensure that the symptoms associated with the code have been eliminated.
Cost to Fix P128F 2014 Chevrolet Silverado
The typical repair costs for addressing the P128F code on a 2014 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, replacing faulty fuel rail pressure sensors can cost between $150 and $300 per sensor, while addressing wiring or connector issues may range from $50 to $150. Labor costs can add an additional $80 to $150 per hour, with the total repair bill potentially ranging from $300 to $800 or more. It is advisable to consult with a qualified mechanic or auto repair shop to get an accurate estimate based on the specific circumstances of your vehicle.
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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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