P20B9 2014 Chevrolet Silverado Code - Reductant Heater 1 Control Circuit
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
- P20B9 2014 Chevrolet Silverado indicates Reductant Heater 1 Control Circuit.
- 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 P20B9 2014 Chevrolet Silverado Description
The Diagnostic Trouble Code (DTC) will be set when the ECM indicates the reductant tank heater control circuit is open for greater than 4 s.
What are the Possible Causes of the DTC P20B9 2014 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 P20B9 2014 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 P20B9 2014 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 P20B9 2014 Chevrolet Silverado code?
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Frequently Asked Questions about P20B9 2014 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P20B9 in a 2014 Chevrolet Silverado?
The common symptoms of OBDII code P20B9 in a 2014 Chevrolet Silverado include the check engine light coming on, reduced engine performance, and potential issues with the vehicle's exhaust emissions system.
2. What does the OBDII code P20B9 indicate in a 2014 Chevrolet Silverado?
OBDII code P20B9 in a 2014 Chevrolet Silverado indicates a problem with the Reductant Heater 1 Control Circuit, specifically related to the diesel exhaust fluid system.
3. What are the possible causes of OBDII code P20B9 in a 2014 Chevrolet Silverado?
Possible causes of OBDII code P20B9 in a 2014 Chevrolet Silverado include a faulty reductant heater 1, wiring issues in the control circuit, a failed reductant heater control module, or a malfunctioning powertrain control module.
4. How can I diagnose the OBDII code P20B9 in my 2014 Chevrolet Silverado?
Diagnosing OBDII code P20B9 in a 2014 Chevrolet Silverado typically involves using a scan tool to retrieve the code, inspecting the reductant heater 1 and its wiring for any visible damage, and testing the components of the control circuit for proper functionality.
5. Can I continue driving my 2014 Chevrolet Silverado with OBDII code P20B9?
It is not recommended to continue driving your 2014 Chevrolet Silverado with OBDII code P20B9 unresolved, as it can lead to reduced engine performance, increased emissions, and potential damage to the vehicle's exhaust system.
6. How can I repair OBDII code P20B9 in my 2014 Chevrolet Silverado?
Repairing OBDII code P20B9 in a 2014 Chevrolet Silverado may involve replacing the faulty reductant heater 1, repairing any damaged wiring in the control circuit, replacing the reductant heater control module, or reprogramming the powertrain control module.
7. Is it possible to reset OBDII code P20B9 in a 2014 Chevrolet Silverado without fixing the underlying issue?
Resetting OBDII code P20B9 in a 2014 Chevrolet Silverado without fixing the underlying issue will only temporarily clear the code, and the check engine light is likely to come back on once the vehicle's computer detects the problem again.
8. How much does it cost to repair OBDII code P20B9 in a 2014 Chevrolet Silverado?
The cost to repair OBDII code P20B9 in a 2014 Chevrolet Silverado can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.
9. Can a DIY enthusiast fix OBDII code P20B9 in a 2014 Chevrolet Silverado?
While some DIY enthusiasts may be able to address simpler issues related to OBDII code P20B9, diagnosing and repairing complex electrical problems like those involving the reductant heater control circuit may require specialized knowledge and tools best handled by a professional mechanic.
10. How often does OBDII code P20B9 occur in a 2014 Chevrolet Silverado?
OBDII code P20B9 related to the Reductant Heater 1 Control Circuit may not be a very common issue in a 2014 Chevrolet Silverado, but when it does occur, it should be addressed promptly to prevent further complications with the vehicle's emissions system.
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