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 thinks the pump that helps clean the exhaust is stuck and won't turn off. It's like a faucet that won't stop running.
The P201F code indicates that the reductant pump, which is responsible for injecting diesel exhaust fluid (DEF) into the exhaust stream to reduce emissions, is stuck in the 'on' position.
The reductant pump is part of the Selective Catalytic Reduction (SCR) system, which reduces nitrogen oxide emissions in diesel engines. When the pump is stuck on, it continuously supplies DEF, which can lead to system inefficiencies and potential damage.
• Check Engine Light is on
• Increased DEF consumption
• Possible engine performance issues
• Faulty reductant pump
• Wiring issues or short circuits
• Malfunctioning control module
Reductant: A substance, such as DEF, used to reduce emissions in SCR systems.
SCR: Selective Catalytic Reduction, a system to reduce nitrogen oxide emissions.
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connections to the reductant pump
• Test the reductant pump for proper operation
• Replace the reductant pump if faulty
• Repair or replace damaged wiring
• Update or reprogram the control module if necessary
• OBD-II scanner
• Multimeter
• Basic hand tools
$300 - $600
Moderate
• Ford F-250
• Chevrolet Silverado
• Ram 2500
• Regular maintenance of the SCR system
• Use high-quality DEF
• Inspect wiring and connections periodically
Emission Control System Issue
• Avoid ignoring the Check Engine Light
• Have the vehicle inspected by a professional
• Monitor DEF consumption
Check if the vehicle's emissions system is covered under warranty, as this can vary by manufacturer.
This code has become more common with the increased use of SCR systems in diesel engines to meet stricter emission standards.
Moderate – While the vehicle may still be drivable, prolonged issues can lead to increased emissions and potential damage to the SCR system.
Driving with a malfunctioning emission control system may not comply with local emissions regulations and could lead to fines.
• Engine at operating temperature
• Vehicle driven under normal conditions
The reductant pump is typically located near the DEF tank, often mounted on the frame rail of the vehicle.
Q: Can I drive with a P201F code?
A: You can drive, but it's best to get it fixed soon to avoid increased emissions and potential damage.
Q: What happens if I ignore this code?
A: Ignoring the code can lead to higher DEF consumption and possible damage to the SCR system.
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