P20BB Dodge Code - Reductant Heater 'A' Control Circuit Low
Quick Answer
The P20BB diagnostic trouble code (DTC) for Dodge vehicles refers to a malfunction in the Reductant Heater 'A' Control Circuit. Common causes include Damaged wiring harness, Faulty connectors, Malfunctioning reductant heater. 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 Dodge indicates Reductant Heater 'A' Control Circuit Low.
- Common causes
- Common causes include Damaged wiring harness, Faulty connectors, Malfunctioning reductant heater.
- 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.
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Code P20BB Dodge Description
The P20BB diagnostic trouble code (DTC) for Dodge vehicles refers to a malfunction in the Reductant Heater 'A' Control Circuit. This code specifically indicates that the control circuit for the reductant heater 'A' is operating at a lower voltage than expected. The reductant heater is an essential component of the vehicle's Selective Catalytic Reduction (SCR) system, which helps reduce harmful emissions by converting nitrogen oxides (NOx) into harmless nitrogen and water vapor.
Common Causes of P20BB Dodge
- Damaged wiring harness
- Faulty connectors
- Malfunctioning reductant heater
- Defective control module
- Corrosion or contamination in the system
Symptoms of P20BB Dodge
- Check Engine Light illuminated
- Reduced fuel efficiency
- Failed emissions test
- Poor engine performance
- Increased emissions output
How to Fix P20BB Dodge
- Perform a comprehensive diagnostic scan to identify the specific cause of the issue.
- Inspect the wiring harness and connectors for any damage or corrosion, repairing or replacing as necessary.
- Test the reductant heater to determine if it is functioning properly, replacing it if found to be faulty.
- Check the control module for any malfunctions, reprogramming or replacing it if needed.
- Clear the DTC and perform a test drive to ensure the issue has been resolved.
Cost to Fix P20BB Dodge
The typical repair costs for addressing a P20BB DTC related to the Reductant Heater 'A' Control Circuit Low can vary depending on the specific cause of the issue. On average, the parts required for this repair may range from $100 to $300, while labor costs can range from $150 to $400. It's important to note that these estimates are approximate and actual costs may vary based on factors such as the vehicle's make and model, the location of the repair shop, and the extent of the repairs needed. It is recommended to consult with a qualified mechanic for a more accurate cost estimate.
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