P10C8 2016 GMC Sierra Code - Reductant Temperature Signal Message Counter Incorrect
Quick Answer
The P10C8 diagnostic trouble code (DTC) specifically refers to a Reductant Temperature Signal Message Counter Incorrect in a 2016 GMC Sierra. Common causes include Faulty Reductant Temperature Sensor: The most common cause of this DTC is a malfunctioning reductant temperature sensor that is sending incorrect signals to the vehicle's computer, Wiring Issues: Corrosion, damage, or loose connections in the wiring harness connected to the reductant temperature sensor can also trigger this fault code, Software Glitch: Sometimes, a software glitch in the vehicle's onboard computer system can lead to erroneous readings from the sensor. 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 2016 GMC Sierra indicates Reductant Temperature Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Reductant Temperature Sensor: The most common cause of this DTC is a malfunctioning reductant temperature sensor that is sending incorrect signals to the vehicle's computer, Wiring Issues: Corrosion, damage, or loose connections in the wiring harness connected to the reductant temperature sensor can also trigger this fault code, Software Glitch: Sometimes, a software glitch in the vehicle's onboard computer system can lead to erroneous readings from the sensor.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P10C8 2016 GMC Sierra Description
The P10C8 diagnostic trouble code (DTC) specifically refers to a Reductant Temperature Signal Message Counter Incorrect in a 2016 GMC Sierra. This code indicates that the vehicle's onboard computer system has detected an issue with the signal it is receiving from the reductant temperature sensor. The reductant temperature sensor is a crucial component of the Selective Catalytic Reduction (SCR) system in modern diesel vehicles, including the GMC Sierra.
Common Causes of P10C8 2016 GMC Sierra
- Faulty Reductant Temperature Sensor: The most common cause of this DTC is a malfunctioning reductant temperature sensor that is sending incorrect signals to the vehicle's computer.
- Wiring Issues: Corrosion, damage, or loose connections in the wiring harness connected to the reductant temperature sensor can also trigger this fault code.
- Software Glitch: Sometimes, a software glitch in the vehicle's onboard computer system can lead to erroneous readings from the sensor.
- Exhaust System Leak: A leak in the exhaust system, particularly around the SCR components, can cause the reductant temperature sensor to provide inaccurate data.
- DEF Contamination: Contaminated or low-quality DEF can also impact the sensor's readings and trigger this DTC.
Symptoms of P10C8 2016 GMC Sierra
- Check Engine Light: The most common symptom associated with this DTC is the illumination of the check engine light on the vehicle's dashboard.
- Reduced Engine Performance: The vehicle may experience a decrease in power and acceleration due to the incorrect signal from the reductant temperature sensor.
- Poor Fuel Economy: An issue with the SCR system can lead to decreased fuel efficiency as the engine may not be operating optimally.
- Failed Emissions Test: If the problem is not addressed, it can cause the vehicle to fail emissions testing due to increased emissions.
How to Fix P10C8 2016 GMC Sierra
- Diagnose the Issue: The first step in resolving this problem is to perform a thorough diagnostic test to identify the exact cause of the incorrect signal from the reductant temperature sensor.
- Replace the Reductant Temperature Sensor: If the sensor is found to be faulty, it will need to be replaced with a new, OEM-quality sensor.
- Check Wiring and Connections: Inspect the wiring harness and connections for any signs of damage, corrosion, or loose connections. Repair or replace as necessary.
- Clear Fault Codes: Once the sensor is replaced and any wiring issues are addressed, clear the fault codes from the vehicle's computer system to reset the check engine light.
- Test Drive and Monitor: After the repair is completed, take the vehicle for a test drive to ensure that the issue has been resolved. Monitor the system for any recurrence of the fault code.
Cost to Fix P10C8 2016 GMC Sierra
The cost of repairing a Reductant Temperature Signal Message Counter Incorrect issue in a 2016 GMC Sierra can vary depending on the specific cause of the problem and the labor rates in your area. Generally, the cost of replacing a reductant temperature sensor ranges from $150 to $300 for the part alone. Labor costs can add an additional $100 to $200, bringing the total repair cost to around $250 to $500.
Need more information about the P10C8 2016 GMC Sierra code?
Need more information on how to fix the P10C8 2016 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P10C8 2016 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P10C8 2016 GMC Sierra Code
No Frequently Asked Questions about P10C8 2016 GMC Sierra Code found.
Discuss the causes and fixes for P10C8 2016 GMC Sierra OBDII Code
Code P10C8 2016 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.