P20BC 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado 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 2017 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 P20BC 2017 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 P20BC 2017 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 P20BC 2017 Chevrolet Silverado code?
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Frequently Asked Questions about P20BC 2017 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P20BC on a 2017 Chevrolet Silverado?
The common symptoms of OBDII code P20BC on a 2017 Chevrolet Silverado include the check engine light illuminating, reduced engine performance, and potential issues with the exhaust system.
2. What does the OBDII code P20BC indicate on a 2017 Chevrolet Silverado?
OBDII code P20BC on a 2017 Chevrolet Silverado indicates a fault in the Reductant Heater 1 Control Circuit, specifically high voltage detected.
3. What are the possible causes of OBDII code P20BC on a 2017 Chevrolet Silverado?
Possible causes of OBDII code P20BC on a 2017 Chevrolet Silverado include a faulty reductant heater 1, issues with the control circuit wiring, or a malfunctioning powertrain control module (PCM).
4. How can I diagnose OBDII code P20BC on a 2017 Chevrolet Silverado?
Diagnosing OBDII code P20BC on a 2017 Chevrolet Silverado involves performing a thorough inspection of the reductant heater 1, checking the control circuit wiring for any damage, and using a diagnostic scanner to retrieve specific fault codes.
5. Can I continue driving my 2017 Chevrolet Silverado with OBDII code P20BC?
It is not recommended to continue driving your 2017 Chevrolet Silverado with OBDII code P20BC as it can lead to reduced engine performance and potential damage to the exhaust system. It is advisable to address the issue promptly.
6. How can I repair OBDII code P20BC on a 2017 Chevrolet Silverado?
To repair OBDII code P20BC on a 2017 Chevrolet Silverado, you may need to replace the faulty reductant heater 1, repair any damaged control circuit wiring, or reprogram the PCM if necessary. It is recommended to consult a professional mechanic for proper diagnosis and repair.
7. Are there any DIY tips for addressing OBDII code P20BC on a 2017 Chevrolet Silverado?
While diagnosing and repairing OBDII code P20BC may require specialized tools and expertise, you can perform basic visual inspections of the wiring and connectors associated with the reductant heater 1. However, for proper repair, it is best to seek professional assistance.
8. Will OBDII code P20BC on a 2017 Chevrolet Silverado affect fuel efficiency?
OBDII code P20BC on a 2017 Chevrolet Silverado may affect fuel efficiency due to potential issues with the reductant heater 1 control circuit. It is advisable to address the code promptly to ensure optimal vehicle performance and fuel economy.
9. How much does it cost to repair OBDII code P20BC on a 2017 Chevrolet Silverado?
The cost to repair OBDII code P20BC on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue, parts required for replacement, and labor costs. It is recommended to obtain a professional diagnosis to determine the exact repair expenses.
10. Can resetting the check engine light clear OBDII code P20BC on a 2017 Chevrolet Silverado?
Resetting the check engine light may temporarily clear OBDII code P20BC on a 2017 Chevrolet Silverado, but the underlying issue causing the fault will still need to be addressed. It is important to diagnose and repair the root cause to prevent the code from reappearing.
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