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 has found a problem with the wiring or the pump that sprays a special fluid into the exhaust to help clean it up. It's like when a water gun doesn't work because the trigger or the tube is broken.
The P208A code is triggered when the Engine Control Module (ECM) detects an open circuit or malfunction in the control circuit of the reductant pump, which is responsible for injecting diesel exhaust fluid (DEF) into the exhaust system.
The reductant pump is part of the Selective Catalytic Reduction (SCR) system, which reduces harmful emissions by injecting DEF into the exhaust stream. The P208A code indicates that the ECM has detected an open circuit or a fault in the control circuit of this pump. This could be due to wiring issues, a faulty pump, or a problem with the ECM itself.
• Check Engine Light illuminated
• Reduced engine performance
• Increased emissions
• Faulty reductant pump
• Open or shorted wiring in the reductant pump circuit
• Faulty ECM
ECM: Engine Control Module
DEF: Diesel Exhaust Fluid
SCR: Selective Catalytic Reduction
• Use an OBD-II scanner to confirm the code.
• Visually inspect the wiring and connectors for damage.
• Test the reductant pump for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the reductant pump if faulty.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $600
Moderate
• Ford F-250
• Chevrolet Silverado
• Ram 2500
• Regular maintenance of the SCR system
• Ensure proper DEF levels
• Check wiring for wear and tear
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Regularly check DEF levels.
Check with your vehicle manufacturer for warranty coverage on emissions control components.
The P208A code has been more commonly reported in vehicles with diesel engines equipped with SCR systems, especially as these systems age.
Moderate – While the vehicle may still be drivable, it can lead to increased emissions and potential engine performance issues.
Driving with a malfunctioning emissions system may violate emissions regulations and contribute to environmental pollution.
• Engine running
• Vehicle at operating temperature
The reductant pump is typically located near the DEF tank, often under the vehicle or in the rear section.
Q: Can I drive with a P208A code?
A: While you may be able to drive, it's not recommended as it can lead to increased emissions and potential engine performance issues.
Q: How often should I check my DEF levels?
A: It's a good practice to check DEF levels at every oil change or as recommended by the vehicle manufacturer.
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