P20BC 2015 GMC Sierra Code - Reductant Heater 1 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
- P20BC 2015 GMC Sierra indicates Reductant Heater 1 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 P20BC 2015 GMC Sierra Description
The Diagnostic Trouble Code (DTC) will be set when the ECM indicates the reductant tank heater control circuit is shorted to a voltage for greater than 4 s.
What are the Possible Causes of the DTC P20BC 2015 GMC Sierra?
- 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 P20BC 2015 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 P20BC 2015 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 P20BC 2015 GMC Sierra code?
Need more information on how to fix the P20BC 2015 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P20BC 2015 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P20BC 2015 GMC Sierra Code
1. What are the common symptoms of OBDII code P20BC in a 2015 GMC Sierra?
The common symptoms of OBDII code P20BC in a 2015 GMC Sierra include the check engine light coming on, decreased fuel efficiency, and potential reduction in engine performance.
2. What does the OBDII code P20BC indicate in a 2015 GMC Sierra?
OBDII code P20BC in a 2015 GMC Sierra indicates a fault with the Reductant Heater 1 Control Circuit, specifically high voltage detected.
3. What are the possible causes of OBDII code P20BC in a 2015 GMC Sierra?
Possible causes of OBDII code P20BC in a 2015 GMC Sierra include a faulty Reductant Heater 1 Control Circuit, damaged wiring or connectors, a malfunctioning reductant heater, or issues with the powertrain control module.
4. How can I diagnose OBDII code P20BC in my 2015 GMC Sierra?
Diagnosing OBDII code P20BC in a 2015 GMC Sierra typically involves using a diagnostic scanner to retrieve the code, checking the associated wiring and connectors for damage, testing the reductant heater for proper function, and verifying the powertrain control module operation.
5. Can I continue driving my 2015 GMC Sierra with OBDII code P20BC?
It is not recommended to continue driving your 2015 GMC Sierra with OBDII code P20BC, as it can lead to potential issues with emissions control and engine performance. It's best to address the underlying problem promptly.
6. How can I repair OBDII code P20BC in my 2015 GMC Sierra?
Repairing OBDII code P20BC in a 2015 GMC Sierra may involve replacing the Reductant Heater 1 Control Circuit, repairing damaged wiring or connectors, fixing the reductant heater, or reprogramming the powertrain control module.
7. Is OBDII code P20BC a serious issue in a 2015 GMC Sierra?
OBDII code P20BC should be addressed promptly in a 2015 GMC Sierra to prevent potential issues with emissions compliance and engine performance. While it may not cause immediate harm, it is still important to resolve the underlying problem.
8. Can a DIY enthusiast fix OBDII code P20BC in a 2015 GMC Sierra?
Depending on their skill level and access to tools, a DIY enthusiast may be able to address OBDII code P20BC in a 2015 GMC Sierra by following repair guides and procedures. However, complex issues may require professional assistance.
9. How much does it cost to repair OBDII code P20BC in a 2015 GMC Sierra?
The cost of repairing OBDII code P20BC in a 2015 GMC Sierra can vary depending on the specific cause of the issue, parts needed for repair, labor costs, and whether the repair is done at a dealership or an independent mechanic.
10. How can I prevent OBDII code P20BC from recurring in my 2015 GMC Sierra?
To prevent OBDII code P20BC from recurring in a 2015 GMC Sierra, it's essential to address any underlying issues promptly, perform regular maintenance on the emissions control system, and drive your vehicle responsibly to avoid strain on engine components.
Discuss the causes and fixes for P20BC 2015 GMC Sierra OBDII Code
Code P20BC 2015 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.
