P20B6 Code - Diesel Exhaust Fluid Reductant Pump Heater Control Performance
Quick Answer
The Diesel Exhaust Fluid (DEF) Supply Pump Assembly has an internal heater to prevent the fluid from freezing inside the pump. Common causes include Faulty Diesel Exhaust Fluid (DEF) Supply Pump Assembly, Diesel Exhaust Fluid Supply Pump Assembly harness is open or shorted, Diesel Exhaust Fluid Supply Pump Assembly 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
- P20B6 indicates Diesel Exhaust Fluid Reductant Pump Heater Control Performance.
- Common causes
- Common causes include Faulty Diesel Exhaust Fluid (DEF) Supply Pump Assembly, Diesel Exhaust Fluid Supply Pump Assembly harness is open or shorted, Diesel Exhaust Fluid Supply Pump Assembly 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 P20B6 Description
What are the Possible Causes of the DTC P20B6?
- Faulty Diesel Exhaust Fluid (DEF) Supply Pump Assembly
- Diesel Exhaust Fluid Supply Pump Assembly harness is open or shorted
- Diesel Exhaust Fluid Supply Pump Assembly circuit poor electrical connection
- Faulty Diesel Exhaust Fluid Dosing Control Unit
How to Fix the DTC P20B6?
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 P20B6 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 P20B6 code?
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Information for Specific Makes
- P20B6 Dodge — Diesel Exhaust Fluid Reductant Pump Heater Control Performance
- P20B6 RAM — Diesel Exhaust Fluid Reductant Pump Heater Control Performance
Frequently Asked Questions about P20B6 Code
1. What are the common symptoms of OBDII code P20B6 (Diesel Exhaust Fluid Reductant Pump Heater Control Performance)?
The common symptoms include the check engine light coming on, reduced engine performance, and potential difficulty starting the vehicle.
2. What are the possible causes of OBDII code P20B6?
Possible causes of this code include a faulty diesel exhaust fluid (DEF) pump, issues with the reductant heater control circuit, damaged wiring, or a malfunctioning reductant heater.
3. How serious is OBDII code P20B6?
While this code may not cause immediate harm to your vehicle, it can lead to increased emissions and potential failure to meet emissions standards. It is best to address this issue promptly to maintain optimal vehicle performance.
4. Can I continue to drive my vehicle with OBDII code P20B6?
It is generally not recommended to continue driving with this code present, as it may lead to further damage to emissions components and affect the overall performance of your vehicle.
5. How can I diagnose and repair OBDII code P20B6?
Diagnosing and repairing this code often involves checking the DEF pump, inspecting the reductant heater control system, testing the wiring for any faults, and clearing the code to see if it returns after repairs.
6. Can a DIY enthusiast fix OBDII code P20B6 at home?
While some experienced DIY enthusiasts may be able to address this issue themselves, it is recommended to have a professional mechanic diagnose and repair the problem to ensure it is properly fixed.
7. How much does it typically cost to repair OBDII code P20B6?
The cost of repairing this code can vary depending on the specific issue causing it, the make and model of the vehicle, and labor costs. It is advisable to get a few quotes from different mechanics to determine the best course of action.
8. Are there any preventive measures to avoid OBDII code P20B6 in the future?
Regularly servicing your vehicle, using high-quality DEF fluid, and addressing any warning lights or unusual symptoms promptly can help prevent issues that may trigger this code.
9. Can OBDII code P20B6 affect the overall fuel efficiency of my vehicle?
Yes, unresolved issues related to this code can impact the fuel efficiency of your vehicle by affecting the emissions control system and overall engine performance.
10. How long does it typically take to repair OBDII code P20B6?
The repair time for this code can vary depending on the specific cause and complexity of the issue. In some cases, it may be resolved quickly, while in others, it may require more extensive diagnostic work and repairs.
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