P20C5 Ford Code - Reductant Heater 'D' Control Circuit/Open
Quick Answer
The diagnostic trouble code P20C5 for Ford vehicles refers to an issue with the Reductant Heater 'D' Control Circuit being open or malfunctioning. Common causes include Faulty wiring connections, Blown fuse related to the Reductant Heater circuit, Damaged relay controlling the 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
- P20C5 Ford indicates Reductant Heater 'D' Control Circuit/Open.
- Common causes
- Common causes include Faulty wiring connections, Blown fuse related to the Reductant Heater circuit, Damaged relay controlling the 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 P20C5 Ford Description
The diagnostic trouble code P20C5 for Ford vehicles refers to an issue with the Reductant Heater 'D' Control Circuit being open or malfunctioning. In modern diesel vehicles, the Reductant Heater is a crucial component of the Selective Catalytic Reduction (SCR) system, which helps reduce harmful emissions by converting nitrogen oxides (NOx) into harmless nitrogen and water vapor. The Reductant Heater is responsible for heating and vaporizing the Diesel Exhaust Fluid (DEF) or AdBlue solution before it enters the SCR catalyst.
Common Causes of P20C5 Ford
- Faulty wiring connections
- Blown fuse related to the Reductant Heater circuit
- Damaged relay controlling the heater
- Malfunctioning Reductant Heater element
- Corrosion or damage to the heater system components
Symptoms of P20C5 Ford
- Check Engine light illuminated on the dashboard
- Decreased fuel efficiency
- Vehicle fails emissions tests
- Reduced engine performance or power output
- Strange odors or exhaust emissions
How to Fix P20C5 Ford
- Begin by conducting a thorough inspection of the Reductant Heater system, including checking for any visible damage or corrosion.
- Use a multimeter to test the continuity of the wiring connections and check for any open circuits or shorts.
- Inspect and test the fuse related to the Reductant Heater circuit to ensure it is functioning correctly.
- Test the relay that controls the Reductant Heater to determine if it is sending the correct signals to the heater element.
- If necessary, replace any damaged components such as wiring, fuses, relays, or the Reductant Heater element itself.
Cost to Fix P20C5 Ford
The typical repair costs for addressing a P20C5 code related to the Reductant Heater 'D' Control Circuit/Open can vary depending on the specific issue causing the malfunction. In general, the cost of parts such as wiring, fuses, relays, or the heater element can range from $100 to $500. Labor costs at auto repair shops typically range from $80 to $150 per hour. It is advisable to check with local repair shops for more precise estimates based on the vehicle make and model, as well as the location of the repair facility.
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