Engine-CodesChevrolet – P10C8 2016 Chevrolet Silverado

P10C8 2016 Chevrolet Silverado Code - Reductant Temperature Signal Message Counter Incorrect

Quick Answer

The P10C8 diagnostic trouble code (DTC) for the 2016 Chevrolet Silverado indicates an issue with the reductant temperature signal, specifically that the message counter is incorrect. Common causes include Faulty Reductant Temperature Sensor: A malfunctioning sensor can send incorrect temperature readings to the ECM, Wiring Issues: Damaged or corroded wiring and connectors can disrupt communication between the sensor and the ECM, Software Glitch: An outdated or corrupted ECM software may lead to incorrect message processing. 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 Chevrolet Silverado indicates Reductant Temperature Signal Message Counter Incorrect.
Common causes
Common causes include Faulty Reductant Temperature Sensor: A malfunctioning sensor can send incorrect temperature readings to the ECM, Wiring Issues: Damaged or corroded wiring and connectors can disrupt communication between the sensor and the ECM, Software Glitch: An outdated or corrupted ECM software may lead to incorrect message processing.
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.
Table of contents Created and updated by William Orellana on Oct 07, 2024
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Code P10C8 2016 Chevrolet Silverado Description

The P10C8 diagnostic trouble code (DTC) for the 2016 Chevrolet Silverado indicates an issue with the reductant temperature signal, specifically that the message counter is incorrect. This code is part of the vehicle's emissions control system, particularly related to the selective catalytic reduction (SCR) system, which is designed to reduce nitrogen oxide (NOx) emissions. The SCR system uses a urea-based solution (commonly known as diesel exhaust fluid or DEF) to convert harmful NOx gases into harmless nitrogen and water vapor.

OBDII Code P10C8 2016 Chevrolet Silverado - Reductant Temperature Signal Message Counter Incorrect
P10C8 2016 Chevrolet Silverado Code - Reductant Temperature Signal Message Counter Incorrect

Common Causes of P10C8 2016 Chevrolet Silverado

  1. Faulty Reductant Temperature Sensor: A malfunctioning sensor can send incorrect temperature readings to the ECM.
  2. Wiring Issues: Damaged or corroded wiring and connectors can disrupt communication between the sensor and the ECM.
  3. Software Glitch: An outdated or corrupted ECM software may lead to incorrect message processing.
  4. Contaminated DEF: Poor-quality or contaminated diesel exhaust fluid can affect the SCR system's performance and sensor readings.
  5. Exhaust System Leaks: Leaks in the exhaust system can lead to incorrect readings from the temperature sensor.

Symptoms of P10C8 2016 Chevrolet Silverado

  1. Check Engine Light: The most common symptom is the illumination of the check engine light on the dashboard.
  2. Reduced Engine Power: The vehicle may enter a limp mode, resulting in reduced power and performance.
  3. Increased Emissions: The vehicle may produce higher levels of NOx emissions, potentially leading to failed emissions tests.
  4. Poor Fuel Economy: Drivers may notice a decrease in fuel efficiency due to improper functioning of the SCR system.
  5. Erratic Engine Performance: The vehicle may exhibit rough idling or stalling due to incorrect fuel/air mixture adjustments.

How to Fix P10C8 2016 Chevrolet Silverado

  1. Diagnostic Scan: Use an OBD-II scanner to confirm the P10C8 code and check for any additional codes that may provide further insight into the issue.
  2. Inspect Wiring and Connectors: Examine the wiring harness and connectors associated with the reductant temperature sensor for signs of damage or corrosion.
  3. Replace the Reductant Temperature Sensor: If the sensor is determined to be faulty, replace it with a new, OEM-quality part.
  4. Update ECM Software: If applicable, update the ECM software to the latest version to ensure proper functionality and communication.
  5. Test the SCR System: After repairs, conduct a thorough test of the SCR system to ensure that it is functioning correctly and that the P10C8 code does not reappear.

Cost to Fix P10C8 2016 Chevrolet Silverado

The cost to diagnose and repair the P10C8 code can vary widely based on several factors, including location, vehicle make and model, and engine type. On average, the total repair costs can range from $200 to $800. This estimate includes parts, such as a new reductant temperature sensor (typically priced between $50 to $150), and labor costs, which can vary from $80 to $150 per hour. It's important to note that labor rates may be higher at dealerships or in metropolitan areas, while independent shops may offer lower rates. Therefore, it is advisable to check local repair shops for more precise estimates tailored to your specific situation.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P10C8 2016 Chevrolet Silverado Code

What does the OBDII code P10C8 mean on a 2016 Chevrolet Silverado?

The P10C8 code indicates an issue with the reductant temperature sensor signal, specifically that the message counter is incorrect or not consistent with expected data.

What are the common symptoms of the P10C8 code?

Symptoms may include an active check engine light, reduced engine performance, issues with the DEF (Diesel Exhaust Fluid) system, and possible warnings about emissions system malfunctions.

What causes the P10C8 code to appear?

Common causes include a malfunctioning reductant temperature sensor, wiring issues such as damaged or corroded connectors, or a problem with the ECM (Engine Control Module) communication.

Can I still drive my 2016 Chevrolet Silverado with the P10C8 code?

While the truck may still be drivable, ignoring the issue could lead to further damage to the DEF system and reduced emissions performance. It’s best to address the problem promptly.

How do I diagnose the P10C8 code?

Diagnosis involves checking the reductant temperature sensor, inspecting wiring and connectors for damage or corrosion, and using a scan tool to monitor sensor data and ECM communication.

What tools are needed to fix the P10C8 code?

You’ll typically need an OBDII scan tool, a multimeter for testing electrical connections, and possibly replacement parts like the reductant temperature sensor or wiring.

How is the P10C8 code repaired?

Repairs may involve replacing the reductant temperature sensor, repairing damaged wiring or connectors, or reprogramming the ECM if the issue is software-related.

Is the P10C8 code a common problem in the 2016 Chevrolet Silverado?

While not extremely common, issues with the reductant system, including the temperature sensor, are known to occur in vehicles equipped with SCR (Selective Catalytic Reduction) systems.

What happens if I ignore the P10C8 code?

Ignoring this code can lead to reduced engine performance, potential DEF system failure, and the inability to pass emissions testing.

Do I need to take my Silverado to a dealership to fix the P10C8 code?

While a dealership can handle the repair, a qualified independent mechanic with the proper tools and experience can also diagnose and fix the issue.

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