P20B3 Dodge Code - Diesel Exhaust Fluid Reductant Heater Control Valve Circuit Low
Quick Answer
The P20B3 code for Dodge specifically refers to an issue with the Diesel Exhaust Fluid (DEF) reductant heater control valve circuit being detected as low. Common causes include Faulty reductant heater control valve, Wiring or connection issues, Defective sensor. 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
- P20B3 Dodge indicates Diesel Exhaust Fluid Reductant Heater Control Valve Circuit Low.
- Common causes
- Common causes include Faulty reductant heater control valve, Wiring or connection issues, Defective sensor.
- 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 P20B3 Dodge Description
The P20B3 code for Dodge specifically refers to an issue with the Diesel Exhaust Fluid (DEF) reductant heater control valve circuit being detected as low. In diesel vehicles equipped with selective catalytic reduction (SCR) systems, DEF is injected into the exhaust stream to reduce harmful emissions. The reductant heater control valve is responsible for regulating the flow of DEF to ensure proper operation of the SCR system.
Common Causes of P20B3 Dodge
- Faulty reductant heater control valve
- Wiring or connection issues
- Defective sensor
- Malfunctioning onboard computer system
Symptoms of P20B3 Dodge
- Check engine light illuminated on the dashboard
- Reduced fuel efficiency
- Decreased engine performance
- Failed emissions tests
- Unusual smells or smoke from the exhaust
How to Fix P20B3 Dodge
- Diagnose the specific cause of the P20B3 code using a diagnostic scanner and testing equipment.
- Inspect the reductant heater control valve, wiring, and connections for any signs of damage or malfunction.
- Replace the faulty control valve, sensor, or wiring as needed.
- Clear the code from the vehicle's computer system and perform a test drive to ensure the issue has been resolved.
- If necessary, reprogram the vehicle's computer system to ensure proper operation of the SCR system.
Cost to Fix P20B3 Dodge
The cost of repairing a P20B3 code can vary depending on the specific cause of the issue and the make and model of the vehicle. On average, the cost of parts and labor for this repair can range from $200 to $500. It's important to note that labor rates at auto repair shops can vary, so it's advisable to obtain quotes from multiple sources to ensure a fair price.
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