Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is having trouble controlling a special injector that helps clean the exhaust. It's like when you try to spray water on a plant but the spray bottle isn't working right.
The code P20D2 indicates an issue with the performance of the control circuit for the Exhaust Aftertreatment Fuel Injector B.
The Exhaust Aftertreatment Fuel Injector B is responsible for injecting a precise amount of fuel into the exhaust system to aid in reducing emissions. The control circuit ensures that the injector operates correctly. If the control performance is not within the expected parameters, the P20D2 code is triggered.
• Check Engine Light is on
• Increased emissions
• Reduced fuel efficiency
• Faulty exhaust aftertreatment fuel injector B
• Wiring issues in the control circuit
• Malfunctioning control module
Exhaust Aftertreatment: A system used to reduce harmful emissions from the exhaust.
Injector: A device that introduces fuel into the exhaust system.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the injector.
• Test the injector for proper operation.
• Replace the faulty injector.
• Repair or replace damaged wiring.
• Reprogram or replace the control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Ford F-250
• Chevrolet Silverado
• Dodge Ram 2500
• Regular maintenance of the exhaust system
• Using high-quality fuel
• Keeping the vehicle's software up to date
Exhaust System Issue
• Avoid driving long distances until fixed to prevent further damage.
• Consult a professional mechanic for accurate diagnosis.
Check with your vehicle manufacturer for specific warranty coverage related to emissions components.
This code has been more prevalent in diesel vehicles due to the complexity of their exhaust aftertreatment systems.
Moderate – While the vehicle may still operate, emissions and fuel efficiency are affected.
Driving with this code may result in failing emissions tests and could lead to fines in areas with strict emissions regulations.
• Engine at operating temperature
• Vehicle in closed-loop operation
The Exhaust Aftertreatment Fuel Injector B is typically located near the exhaust manifold or along the exhaust system.
Q: Can I drive with a P20D2 code?
A: It's not recommended to drive long distances as it can affect emissions and fuel efficiency.
Q: What happens if I ignore the P20D2 code?
A: Ignoring the code can lead to increased emissions, reduced fuel efficiency, and potential damage to the exhaust system.
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