P20C0 2018 Chevrolet Silverado Code - Reductant Heater 2 Control Circuit High Voltage
Quick Answer
As reductant will freeze at temperatures below -11°C (12°F), there are 2 reductant heaters located in the reductant tank. Common causes include Faulty Reductant Heater, Reductant Heater harness is open or shorted, Reductant Heater 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
- P20C0 2018 Chevrolet Silverado indicates Reductant Heater 2 Control Circuit High Voltage.
- Common causes
- Common causes include Faulty Reductant Heater, Reductant Heater harness is open or shorted, Reductant Heater 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 P20C0 2018 Chevrolet Silverado Description
The Diagnostic Trouble Code (DTC) will be set when the ECM indicates the reductant line heater control circuit is shorted to a voltage for greater than 4 s.
What are the Possible Causes of the DTC P20C0 2018 Chevrolet Silverado?
- Faulty Reductant Heater
- Reductant Heater harness is open or shorted
- Reductant Heater circuit poor electrical connection
- Faulty Reductant Pump and Sensor Assembly
- Faulty Reductant Control Module
How to Fix the DTC P20C0 2018 Chevrolet Silverado?
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 P20C0 2018 Chevrolet Silverado 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 P20C0 2018 Chevrolet Silverado code?
Need more information on how to fix the P20C0 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
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Frequently Asked Questions about P20C0 2018 Chevrolet Silverado Code
1. What are common symptoms of OBDII code P20C0 on a 2018 Chevrolet Silverado?
Symptoms may include the check engine light illuminating, reduced engine power, and potential issues with the vehicle's emissions system.
2. What does the OBDII code P20C0 indicate in a 2018 Chevrolet Silverado?
Code P20C0 signifies a problem with the Reductant Heater 2 Control Circuit showing high voltage, indicating an issue with the reductant heater system.
3. What are possible causes of the Reductant Heater 2 Control Circuit High Voltage code on a 2018 Chevrolet Silverado?
Potential causes include a faulty reductant heater, damaged wiring or connectors, a malfunctioning reductant heater control module, or issues with the powertrain control module (PCM).
4. How can I diagnose the cause of OBDII code P20C0 on my 2018 Chevrolet Silverado?
Diagnosis typically involves checking the reductant heater system components for damage, testing the wiring and connectors for continuity, and using a diagnostic scan tool to analyze the system's operation.
5. Can I continue driving my 2018 Chevrolet Silverado with OBDII code P20C0?
It is not recommended to continue driving with this code present, as it may lead to reduced engine performance and potential long-term damage to the vehicle's emissions system.
6. How can I repair OBDII code P20C0 on my 2018 Chevrolet Silverado?
Repair options may include replacing the faulty reductant heater, repairing damaged wiring or connectors, or addressing any issues with the control modules as needed.
7. Is it possible to reset the OBDII code P20C0 on a 2018 Chevrolet Silverado?
While clearing the code with a diagnostic scan tool is possible, it is important to address the underlying issue causing the code to prevent it from reoccurring.
8. How much does it cost to fix OBDII code P20C0 on a 2018 Chevrolet Silverado?
The cost of repair can vary depending on the specific cause of the code, parts needed for replacement, and labor costs at a repair shop. It's advisable to obtain quotes from different mechanics.
9. Can a DIY enthusiast fix OBDII code P20C0 on a 2018 Chevrolet Silverado?
Depending on the individual's skill level and access to tools, some may be able to address simpler issues like checking wiring connections. However, more complex repairs may require professional assistance.
10. How often does OBDII code P20C0 occur in 2018 Chevrolet Silverado vehicles?
The occurrence of this specific code can vary, but it is advisable to address it promptly to ensure the vehicle's emissions system functions correctly.
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