P128D 2018 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 2018 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 2018 Chevrolet Silverado Description
What are the Possible Causes of the DTC P128D 2018 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 2018 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 2018 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 2018 Chevrolet Silverado Code
1. What does the OBDII code P128D mean on a 2018 Chevrolet Silverado?
P128D indicates that the Fuel Rail Temperature Sensor 2 is reporting an incorrect signal message counter, suggesting a communication or sensor issue.
2. What are the common symptoms of code P128D?
Symptoms may include poor engine performance, reduced fuel efficiency, hard starting, or an illuminated check engine light.
3. What causes the P128D code to trigger?
Common causes include a faulty fuel rail temperature sensor, damaged wiring or connectors, or a malfunction in the ECM (Engine Control Module).
4. Can I continue driving with a P128D code?
Driving with this code may lead to decreased performance or potential engine damage. It’s best to address the issue promptly.
5. How do you diagnose the P128D code?
Diagnosis involves using a scan tool to monitor fuel rail temperature sensor data, visually inspecting wiring, and testing the sensor for proper functionality.
6. How do you fix the P128D code on a 2018 Chevrolet Silverado?
Repairs may include replacing the fuel rail temperature sensor, repairing damaged wiring, or reprogramming/updating the ECM if necessary.
7. How much does it cost to fix a P128D code?
The cost can vary, but replacing a fuel rail temperature sensor typically ranges from $150 to $300, including parts and labor.
8. Can a faulty fuel rail temperature sensor cause engine damage?
While it may not directly damage the engine, incorrect fuel temperature readings can lead to improper fuel delivery, potentially causing long-term issues.
9. Is the P128D code specific to the 2018 Chevrolet Silverado?
No, the P128D code can appear in other GM vehicles, but the exact meaning and repair process may vary slightly.
10. Can a software update fix the P128D code?
In some cases, a software update or ECM reprogramming may resolve the issue if it’s caused by a communication error.
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