P20BF 2015 Chevrolet Silverado 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 2015 Chevrolet Silverado 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 2015 Chevrolet Silverado 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 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 P20BF 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 P20BF 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 P20BF 2015 Chevrolet Silverado code?
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Frequently Asked Questions about P20BF 2015 Chevrolet Silverado Code
1. What does the OBDII code P20BF mean in a 2015 Chevrolet Silverado?
P20BF indicates a problem with the Reductant Heater 2 Control Circuit, specifically low voltage detected by the engine control module (ECM).
2. What are the common symptoms of the P20BF code in a 2015 Silverado?
Symptoms include the check engine light turning on, potential DEF system warnings, reduced engine performance, and difficulty maintaining proper exhaust aftertreatment.
3. What causes the P20BF code in a 2015 Chevrolet Silverado?
Common causes include a faulty reductant heater, damaged wiring or connectors in the heater circuit, or issues with the ECM.
4. Can I drive my Silverado with the P20BF code?
While the truck may still be drivable, prolonged operation with this code can affect the DEF system and lead to reduced engine performance or emissions compliance issues.
5. How do I diagnose the P20BF code in a 2015 Chevrolet Silverado?
Diagnosis involves inspecting the reductant heater, checking wiring and connectors for damage, and testing the voltage and continuity of the circuit using a multimeter.
6. How do I fix the P20BF code on a 2015 Silverado?
Repairs typically include replacing the reductant heater, repairing damaged wiring or connectors, or addressing ECM issues if the circuit is functioning correctly.
7. How much does it cost to repair the P20BF code on a 2015 Silverado?
Repair costs vary, but replacing the reductant heater can range from $200 to $600, depending on labor and parts costs.
8. What is the role of the reductant heater in my Silverado?
The reductant heater warms the DEF fluid in cold conditions to ensure proper flow and functionality of the emissions system.
9. Can a faulty reductant heater cause emissions problems?
Yes, a malfunctioning reductant heater can prevent proper DEF system operation, leading to increased emissions and possible compliance issues.
10. What tools are needed to diagnose the P20BF code?
You’ll need an OBDII scanner, a multimeter for testing voltage and continuity, and possibly wiring repair tools if damage is found.
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