P10C8 2018 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 2018 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 2018 GMC Sierra Description
What are the Possible Causes of the DTC P10C8 2018 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 2018 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 2018 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 2018 GMC Sierra code?
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Frequently Asked Questions about P10C8 2018 GMC Sierra Code
What does the OBDII code P10C8 mean on a 2018 GMC Sierra?
The code P10C8 indicates that the reductant temperature signal message counter is incorrect, which may point to issues with the DEF (Diesel Exhaust Fluid) system's temperature sensor or communication errors.
What are the symptoms of code P10C8?
Symptoms may include the check engine light, reduced engine performance, DEF system warnings, or issues with emissions control.
What causes the P10C8 code on a GMC Sierra?
Common causes include a faulty reductant temperature sensor, wiring or connector issues, a malfunctioning reductant control module, or communication errors between modules.
Can code P10C8 affect vehicle performance?
Yes, this code can lead to reduced engine power and efficiency, as the DEF system may be unable to function properly.
How do you diagnose the P10C8 code?
Diagnosis involves scanning the vehicle for stored codes, inspecting the reductant temperature sensor and wiring, and testing the communication between modules.
Is it safe to drive with the P10C8 code?
Driving with this code may be unsafe as the DEF system could malfunction, leading to increased emissions or triggering limp mode.
How can the P10C8 code be fixed?
Repairs may include replacing the reductant temperature sensor, fixing wiring or connector issues, or reprogramming the reductant control module if necessary.
What tools are needed to troubleshoot the P10C8 code?
You’ll need an OBDII scanner, a multimeter for electrical testing, and possibly a service manual for the vehicle's DEF system.
Does the P10C8 code require immediate attention?
Yes, it should be addressed promptly to avoid potential engine performance issues or emission system malfunctions.
Can the P10C8 code be cleared without repairs?
Clearing the code without fixing the underlying issue may cause the problem to reappear and could lead to further damage.
Discuss the causes and fixes for P10C8 2018 GMC Sierra OBDII Code
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