P20BF 2014 GMC Sierra Code - Reductant Heater 2 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
- P20BF 2014 GMC Sierra indicates Reductant Heater 2 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 P20BF 2014 GMC Sierra Description
The Diagnostic Trouble Code (DTC) will be set when the ECM indicates the reductant line heater control circuit is shorted to ground or overloaded for greater than 4 s.
What are the Possible Causes of the DTC P20BF 2014 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 P20BF 2014 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 P20BF 2014 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.
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Frequently Asked Questions about P20BF 2014 GMC Sierra Code
1. What are the common symptoms of OBDII code P20BF in a 2014 GMC Sierra?
The common symptoms of OBDII code P20BF in a 2014 GMC Sierra include the check engine light illuminating, reduced engine performance, and potential issues with the vehicle's emission control system.
2. What does the OBDII code P20BF "Reductant Heater 2 Control Circuit Low Voltage" mean for a 2014 GMC Sierra?
The OBDII code P20BF indicates that there is a low voltage condition in the control circuit for Reductant Heater 2 in the selective catalytic reduction (SCR) system of a 2014 GMC Sierra.
3. What are the possible causes of OBDII code P20BF in a 2014 GMC Sierra?
Possible causes of OBDII code P20BF in a 2014 GMC Sierra include a faulty reductant heater 2, damaged wiring or connectors in the control circuit, a defective SCR system module, or issues with the powertrain control module (PCM).
4. How can I diagnose the OBDII code P20BF in my 2014 GMC Sierra?
Diagnosing the OBDII code P20BF in a 2014 GMC Sierra involves using an OBDII scanner to retrieve the code and then performing a thorough inspection of the reductant heater 2, its wiring, connectors, and related components to identify the root cause of the low voltage condition.
5. What are the repair options for OBDII code P20BF in a 2014 GMC Sierra?
Repair options for OBDII code P20BF in a 2014 GMC Sierra may include replacing the faulty reductant heater 2, repairing damaged wiring or connectors, replacing the SCR system module, or reprogramming the powertrain control module (PCM) if necessary.
6. Can driving with OBDII code P20BF in a 2014 GMC Sierra cause further damage?
Continuing to drive with OBDII code P20BF in a 2014 GMC Sierra may lead to reduced fuel efficiency, increased emissions, and potential damage to other components of the emission control system over time. It is recommended to address the issue promptly.
7. How much does it typically cost to repair OBDII code P20BF in a 2014 GMC Sierra?
The cost of repairing OBDII code P20BF in a 2014 GMC Sierra can vary depending on the specific cause of the issue, the required parts, and labor costs. It is advisable to consult with a professional mechanic for an accurate estimate.
8. Is OBDII code P20BF a common issue in 2014 GMC Sierra vehicles?
While OBDII code P20BF "Reductant Heater 2 Control Circuit Low Voltage" is not as common as some other codes, it can still occur in 2014 GMC Sierra vehicles due to various factors such as component wear, electrical issues, or module failures.
9. Can I reset the OBDII code P20BF in my 2014 GMC Sierra using an OBDII scanner?
Resetting the OBDII code P20BF in a 2014 GMC Sierra using an OBDII scanner may clear the code temporarily, but if the underlying issue causing the low voltage condition is not addressed, the code is likely to return. It is recommended to diagnose and repair the root cause of the problem.
10. How long does it typically take to repair OBDII code P20BF in a 2014 GMC Sierra?
The time it takes to repair OBDII code P20BF in a 2014 GMC Sierra can vary depending on the complexity of the issue, availability of parts, and the mechanic's expertise. In general, the repair process may take a few hours to complete.
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