P128C Code - Fuel Rail Temperature Sensor 1 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 1, Fuel Rail Temperature Sensor 1 harness is open or shorted, Fuel Rail Temperature Sensor 1 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
- P128C indicates Fuel Rail Temperature Sensor 1 Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Fuel Rail Temperature Sensor 1, Fuel Rail Temperature Sensor 1 harness is open or shorted, Fuel Rail Temperature Sensor 1 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 P128C Description
What are the Possible Causes of the DTC P128C?
- Faulty Fuel Rail Temperature Sensor 1
- Fuel Rail Temperature Sensor 1 harness is open or shorted
- Fuel Rail Temperature Sensor 1 circuit poor electrical connection
How to Fix the DTC P128C?
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 P128C 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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Information for Specific Makes
- P128C Buick — Fuel Rail Temperature Sensor 1 Signal Message Counter Incorrect
- P128C Cadillac — Fuel Rail Temperature Sensor 1 Signal Message Counter Incorrect
- P128C Chevrolet — Fuel Rail Temperature Sensor 1 Signal Message Counter Incorrect
- P128C Dodge — Transmission Control Module Power Control Circuit High
- P128C GMC — Fuel Rail Temperature Sensor 1 Signal Message Counter Incorrect
Frequently Asked Questions about P128C Code
1. What are the common symptoms of OBDII code P128C?
- Common symptoms of P128C include rough idling, decreased fuel efficiency, and potential stalling of the vehicle.
2. What does the OBDII code P128C indicate?
- P128C indicates that the Fuel Rail Temperature Sensor 1 Signal Message Counter is incorrect, suggesting a problem with the sensor's signal message count.
3. What are the possible causes of OBDII code P128C?
- Possible causes of P128C include a faulty fuel rail temperature sensor, wiring or connector issues, or a problem with the engine control module (ECM).
4. How can I diagnose the cause of OBDII code P128C?
- Diagnosing P128C involves inspecting the fuel rail temperature sensor and its wiring for any damage, testing the sensor's resistance, and checking for ECM communication issues.
5. Can I drive my vehicle with the OBDII code P128C?
- It is not recommended to drive your vehicle with an unresolved P128C code, as it can lead to potential engine performance issues and further damage if left untreated.
6. How can I repair OBDII code P128C?
- Repairing P128C may involve replacing the faulty fuel rail temperature sensor, repairing or replacing damaged wiring or connectors, or reprogramming the ECM if necessary.
7. Is it safe to reset the OBDII code P128C without addressing the underlying issue?
- While resetting the code may temporarily turn off the check engine light, it is crucial to address the root cause of P128C to prevent recurring issues and ensure proper vehicle performance.
8. How much does it typically cost to fix OBDII code P128C?
- The cost of fixing P128C can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor at a repair shop.
9. Can a DIY enthusiast fix OBDII code P128C at home?
- DIY enthusiasts with automotive repair knowledge and tools may be able to address P128C by replacing the fuel rail temperature sensor or repairing wiring issues, following proper diagnostic procedures.
10. How often does OBDII code P128C occur in vehicles?
- OBDII code P128C related to the Fuel Rail Temperature Sensor 1 Signal Message Counter Incorrect is relatively uncommon, but it can occur in vehicles with sensor or communication system issues.
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