P128F 2017 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 2017 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 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC P128F 2017 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 2017 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 2017 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 2017 Chevrolet Silverado Code
What does the OBDII code P128F mean on a 2017 Chevrolet Silverado?
P128F indicates that the Engine Control Module (ECM) has detected an incorrect message counter between the fuel rail pressure sensors 1 and 2, which can affect fuel system performance.
What are the common symptoms of P128F in a 2017 Chevrolet Silverado?
Common symptoms include reduced engine performance, poor fuel efficiency, difficulty starting the engine, and the illumination of the check engine light.
What causes the P128F code to appear on the 2017 Chevrolet Silverado?
The code can be caused by faulty fuel rail pressure sensors, damaged electrical connectors or wiring, a software issue in the ECM, or a failing ECM.
Can I drive my 2017 Chevrolet Silverado with the P128F code?
Driving with the P128F code is not recommended, as it can lead to reduced performance and potential engine damage if the fuel delivery system is not functioning correctly.
How do I diagnose the P128F code on a 2017 Chevrolet Silverado?
Diagnosis involves checking the fuel rail pressure sensors, inspecting the wiring and connectors for damage, and using a scan tool to review live data and compare fuel pressure readings.
What repairs can fix the P128F code on a 2017 Chevrolet Silverado?
Repairs may include replacing faulty fuel rail pressure sensors, repairing or replacing damaged wiring or connectors, updating the ECM software, or replacing the ECM if necessary.
How much does it cost to repair the P128F code on a 2017 Chevrolet Silverado?
The cost varies depending on the repair, with sensor replacement ranging from $200 to $400 and ECM replacement potentially costing $1,000 or more.
Can a dirty fuel system cause the P128F code in a 2017 Chevrolet Silverado?
While a dirty fuel system is not a direct cause of this code, it can contribute to fuel pressure irregularities, which may exacerbate the issue.
Is a software update a possible solution for the P128F code on a 2017 Chevrolet Silverado?
Yes, a software update for the ECM may resolve communication or compatibility issues causing the code.
Do I need to replace both fuel rail pressure sensors for the P128F code?
Not necessarily; you should test both sensors and replace only the one that is faulty unless both show signs of failure.
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