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 found a problem with the system that helps clean the exhaust. It's like if a pump that sprays a special cleaning liquid isn't working right.
The P208C code indicates that the engine control module (ECM) has detected a low voltage condition in the control circuit for the reductant pump, which is part of the diesel exhaust fluid (DEF) system.
The reductant pump is responsible for delivering diesel exhaust fluid to the exhaust system to reduce emissions. A 'control circuit low' condition means the ECM is seeing a voltage that is lower than expected, which could indicate a wiring issue, a failed pump, or a problem with the ECM itself.
• Check Engine Light illuminated
• Possible reduction in engine performance
• Higher emissions levels
• Faulty reductant pump
• Open or shorted wiring in the reductant pump circuit
• Faulty ECM
ECM: Engine Control Module
DEF: Diesel Exhaust Fluid
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for the reductant pump for damage.
• Test the reductant pump for proper operation.
• Repair or replace damaged wiring/connectors.
• Replace the reductant pump if faulty.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Ford F-Series
• Chevrolet Silverado
• Ram 1500
• Regularly inspect and maintain the DEF system.
• Ensure the DEF tank is filled with quality fluid.
• Check for recalls related to the DEF system.
Sensor Issue
• Have the vehicle inspected by a professional mechanic.
• Avoid ignoring the Check Engine Light for extended periods.
Check with your vehicle manufacturer for warranty coverage on emissions-related components.
This code has become more common with the increased use of DEF systems in diesel vehicles to meet emissions standards.
Moderate – While the vehicle may still be drivable, emissions could be higher than allowed, and performance might be affected.
It is illegal to drive a vehicle that does not meet emissions standards. Ensure repairs are completed promptly.
• Engine running
• Vehicle at operating temperature
The reductant pump is typically located near the DEF tank, which is usually positioned at the rear of the vehicle.
Q: Can I drive with a P208C code?
A: You may be able to drive, but it is not recommended as it could lead to higher emissions and reduced performance.
Q: Is the P208C code covered under warranty?
A: Emissions-related components may be covered under warranty. Check with your vehicle manufacturer.
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