P20BB 2015 Chevrolet Silverado Code - Reductant Heater 1 Control Circuit Low 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
- P20BB 2015 Chevrolet Silverado indicates Reductant Heater 1 Control Circuit Low 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 P20BB 2015 Chevrolet Silverado Description
The Diagnostic Trouble Code (DTC) will be set when the ECM indicates the reductant tank heater control circuit is shorted to ground or overloaded for greater than 4 s.
What are the Possible Causes of the DTC P20BB 2015 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 P20BB 2015 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 P20BB 2015 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 P20BB 2015 Chevrolet Silverado code?
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Need Help with the Code?
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Frequently Asked Questions about P20BB 2015 Chevrolet Silverado Code
1. What are common symptoms of OBDII code P20BB in a 2015 Chevrolet Silverado?
The common symptoms of OBDII code P20BB in a 2015 Chevrolet Silverado include the check engine light coming on, reduced engine performance, and potential issues with the vehicle's emissions system.
2. What does the OBDII code P20BB indicate in a 2015 Chevrolet Silverado?
The OBDII code P20BB in a 2015 Chevrolet Silverado indicates a problem with the Reductant Heater 1 Control Circuit, specifically low voltage being detected.
3. What are possible causes of the OBDII code P20BB in a 2015 Chevrolet Silverado?
Possible causes of the OBDII code P20BB in a 2015 Chevrolet Silverado include a faulty Reductant Heater 1, damaged wiring or connectors in the control circuit, or issues with the vehicle's powertrain control module.
4. How serious is the OBDII code P20BB in a 2015 Chevrolet Silverado?
While the severity of the OBDII code P20BB may vary, it is important to address this issue promptly to ensure proper functioning of the vehicle's emissions system and to prevent potential damage to other components.
5. Can I continue driving my 2015 Chevrolet Silverado with the OBDII code P20BB present?
It is generally not recommended to continue driving your 2015 Chevrolet Silverado with the OBDII code P20BB present, as it can lead to reduced engine performance and potential emissions system problems. It is best to have the issue diagnosed and repaired as soon as possible.
6. How can I diagnose the OBDII code P20BB in my 2015 Chevrolet Silverado?
Diagnosing the OBDII code P20BB in a 2015 Chevrolet Silverado typically involves using an OBDII scanner to retrieve the code, checking the Reductant Heater 1 and its circuit for faults, and inspecting the wiring and connectors for any damage.
7. What are some repair tips for fixing the OBDII code P20BB in a 2015 Chevrolet Silverado?
Repair tips for fixing the OBDII code P20BB in a 2015 Chevrolet Silverado may include checking and replacing the Reductant Heater 1 if faulty, repairing or replacing damaged wiring or connectors, and resetting the trouble codes after repairs are completed.
8. Can I reset the OBDII code P20BB in my 2015 Chevrolet Silverado without making repairs?
While you can reset the OBDII code P20BB in your 2015 Chevrolet Silverado, it is not recommended to do so without addressing the underlying issue causing the code. Resetting the code without repairs may lead to the problem recurring.
9. How much does it cost to repair the OBDII code P20BB in a 2015 Chevrolet Silverado?
The cost to repair the OBDII code P20BB in a 2015 Chevrolet Silverado can vary depending on the specific issue causing the code, the labor rates in your area, and whether any parts need to be replaced. It is advisable to consult a mechanic for an accurate estimate.
10. Is the OBDII code P20BB covered under warranty for a 2015 Chevrolet Silverado?
Whether the OBDII code P20BB is covered under warranty for a 2015 Chevrolet Silverado depends on the vehicle's warranty status, the specific terms of the warranty, and the cause of the issue. It is recommended to check with your Chevrolet dealership or refer to your warranty documentation for more information.
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