Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the system that helps clean the car's exhaust. It's like a pipe that should send special liquid to clean the air, but something is stopping it.
The P20D7 code indicates an issue with the electrical circuit that controls the fuel supply to the exhaust aftertreatment system, which is responsible for reducing emissions.
The P20D7 code is triggered when the Engine Control Module (ECM) detects an open circuit or malfunction in the fuel supply control circuit for the exhaust aftertreatment system. This system typically uses a diesel exhaust fluid (DEF) or similar substance to reduce harmful emissions.
• Check engine light is on
• Reduced engine performance
• Increased emissions
• Faulty exhaust aftertreatment fuel supply pump
• Damaged or corroded wiring or connectors
• Faulty ECM or control module
ECM: Engine Control Module
DEF: Diesel Exhaust Fluid
• Check for other diagnostic trouble codes (DTCs)
• Inspect wiring and connectors for damage
• Test the exhaust aftertreatment fuel supply pump
• Repair or replace damaged wiring or connectors
• Replace the exhaust aftertreatment fuel supply pump
• Reprogram or replace the ECM if necessary
• OBD-II scanner
• Multimeter
• Wiring diagram
$200 - $800
Moderate
• Ford F-250
• Chevrolet Silverado
• Ram 2500
• Regular maintenance of the exhaust system
• Routine checks for wiring integrity
• Use high-quality diesel exhaust fluid
Sensor Issue
• Do not ignore the check engine light
• Consult a professional mechanic if unsure
• Avoid driving long distances until fixed
Check with your vehicle manufacturer for emissions-related warranty coverage.
This code has become more common with the adoption of stricter emissions standards and the use of DEF systems in diesel engines.
Moderate – Addressing this issue soon is important to prevent increased emissions and potential damage to the exhaust system.
Driving with a malfunctioning emissions system may violate emissions regulations and contribute to environmental pollution.
• Engine running
• Vehicle at operating temperature
The exhaust aftertreatment fuel supply pump is typically located near the exhaust system, often under the vehicle.
Q: Can I drive with a P20D7 code?
A: It's not recommended as it can lead to increased emissions and potential damage to the exhaust system.
Q: How can I prevent this code from appearing?
A: Regular maintenance and using high-quality diesel exhaust fluid can help prevent this issue.
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