P128D 2014 Chevrolet Silverado Code - Fuel Rail Temperature Sensor 2 Signal 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 Temperature Sensor 2, Fuel Rail Temperature Sensor 2 harness is open or shorted, Fuel Rail Temperature Sensor 2 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
- P128D 2014 Chevrolet Silverado indicates Fuel Rail Temperature Sensor 2 Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Fuel Rail Temperature Sensor 2, Fuel Rail Temperature Sensor 2 harness is open or shorted, Fuel Rail Temperature Sensor 2 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 P128D 2014 Chevrolet Silverado Description
What are the Possible Causes of the DTC P128D 2014 Chevrolet Silverado?
- Faulty Fuel Rail Temperature Sensor 2
- Fuel Rail Temperature Sensor 2 harness is open or shorted
- Fuel Rail Temperature Sensor 2 circuit poor electrical connection
How to Fix the DTC P128D 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 P128D 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 P128D 2014 Chevrolet Silverado Code
1. What does the OBDII code P128D mean on a 2014 Chevrolet Silverado?
P128D indicates an issue with the Fuel Rail Temperature Sensor 2, where its signal message counter is incorrect, suggesting a communication or sensor fault.
2. What are the common symptoms of code P128D on a Chevy Silverado?
Symptoms may include illuminated check engine light, reduced engine performance, poor fuel efficiency, or hard starting in extreme temperatures.
3. What causes the P128D code to be triggered?
Common causes include a faulty fuel rail temperature sensor, wiring or connector issues, poor communication between the sensor and the ECM, or a malfunctioning ECM.
4. Can I drive my 2014 Chevrolet Silverado with a P128D code?
While the truck may still be drivable, it’s not recommended as it can lead to poor performance or further damage to the fuel system and engine components.
5. How do I diagnose the P128D code on my Silverado?
Check the wiring and connections to the fuel rail temperature sensor for damage or corrosion, test the sensor with a multimeter, and scan the ECM for additional codes or communication errors.
6. How do I fix the P128D code on a 2014 Chevy Silverado?
Repairs may involve replacing the fuel rail temperature sensor, repairing damaged wiring or connectors, or reprogramming or replacing the ECM if necessary.
7. What tools are needed to troubleshoot the P128D code?
A scan tool capable of reading live data, a multimeter for electrical testing, and basic hand tools for inspecting and replacing components are typically required.
8. How much does it cost to fix a P128D code?
Costs vary depending on the repair, but replacing the fuel rail temperature sensor typically costs $100–$300, including parts and labor. Wiring repairs or ECM replacement could be more expensive.
9. Can a bad fuel rail temperature sensor cause other problems in the Silverado?
Yes, a faulty sensor can lead to inaccurate fuel delivery adjustments, causing poor engine performance, increased emissions, and potential long-term damage to the fuel system.
10. Does the P128D code require ECM reprogramming after repairs?
In some cases, reprogramming or resetting the ECM may be necessary to clear the code and ensure proper communication with the new or repaired sensor.
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