P10C8 2017 GMC Sierra Code - Reductant Temperature Signal Message Counter Incorrect
Quick Answer
Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Reductant Temperature Sensor, Reductant Temperature Sensor harness is open or shorted, Reductant Temperature 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
- P10C8 2017 GMC Sierra indicates Reductant Temperature Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Reductant Temperature Sensor, Reductant Temperature Sensor harness is open or shorted, Reductant Temperature 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 P10C8 2017 GMC Sierra Description
What are the Possible Causes of the DTC P10C8 2017 GMC Sierra?
- Faulty Reductant Temperature Sensor
- Reductant Temperature Sensor harness is open or shorted
- Reductant Temperature Sensor circuit poor electrical connection
How to Fix the DTC P10C8 2017 GMC Sierra?
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 P10C8 2017 GMC Sierra 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.
Need more information about the P10C8 2017 GMC Sierra code?
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Frequently Asked Questions about P10C8 2017 GMC Sierra Code
What does the OBDII code P10C8 mean on a 2017 GMC Sierra?
The P10C8 code indicates an issue with the reductant temperature sensor, specifically that the signal message counter is incorrect or invalid.
What are the common symptoms of the P10C8 code?
Symptoms may include the check engine light turning on, poor DEF (Diesel Exhaust Fluid) system performance, or reduced engine power in severe cases.
What causes the P10C8 code to appear?
Common causes include a faulty reductant temperature sensor, damaged wiring or connectors, a malfunctioning reductant control module, or software issues in the ECM.
Can I drive my 2017 GMC Sierra with the P10C8 code active?
While it may be possible to drive, it is not recommended as it could lead to reduced DEF system efficiency and may eventually cause engine performance issues.
How is the P10C8 code diagnosed?
A mechanic will use a scan tool to confirm the code, inspect the reductant temperature sensor and its wiring, and test the sensor signal and communication with the ECM.
How do you fix the P10C8 code?
Repairs may involve replacing the reductant temperature sensor, repairing or replacing damaged wiring or connectors, or updating the ECM software.
Is the reductant temperature sensor expensive to replace?
The cost of replacing the sensor depends on labor rates and parts pricing, but it is generally a mid-range repair compared to other emissions system components.
Can a software update fix the P10C8 code?
Yes, in some cases, a software update for the ECM or reductant control module can resolve the issue if it's caused by programming errors.
What tools are required to troubleshoot the P10C8 code?
Diagnostic tools like an OBDII scanner, multimeter, and wiring diagrams are commonly used to identify the root cause of this code.
Will clearing the P10C8 code with a scanner fix the problem?
Clearing the code may turn off the check engine light temporarily, but if the underlying issue isn’t resolved, the code will likely return.
Discuss the causes and fixes for P10C8 2017 GMC Sierra OBDII Code
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