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 computer in your car found a problem with the sensor that checks the temperature inside a special box that helps clean the car's exhaust. The sensor is saying the temperature is too high.
The P06F3 code is triggered when the reductant control module detects that the internal temperature sensor circuit is reading higher than the expected range.
The reductant control module is responsible for managing the diesel exhaust fluid (DEF) system in vehicles equipped with selective catalytic reduction (SCR) systems. The internal temperature sensor within this module monitors the temperature to ensure optimal operation. A 'circuit high' condition suggests that the sensor is reporting a higher voltage than normal, which could indicate a sensor fault, wiring issue, or module malfunction.
• Check Engine Light is on
• Possible reduction in engine performance
• Increased emissions
• Faulty internal temperature sensor
• Wiring issues such as shorts or open circuits
• Defective reductant control module
Reductant: A substance used to reduce pollutants in exhaust gases.
SCR: Selective Catalytic Reduction, a system to reduce NOx emissions in diesel engines.
• Use an OBD-II scanner to confirm the code.
• Inspect wiring and connectors for damage or corrosion.
• Test the internal temperature sensor for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the internal temperature sensor if faulty.
• Replace the reductant control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $800
Moderate
• Ford F-250
• Chevrolet Silverado 2500
• Ram 2500
• Regular maintenance and inspection of the DEF system.
• Ensure proper quality and level of diesel exhaust fluid.
• Avoid prolonged idling which can affect SCR system performance.
Sensor Issue
• Get the vehicle checked by a professional mechanic.
• Avoid ignoring the Check Engine Light as it may lead to more serious issues.
Check with your vehicle manufacturer for warranty coverage on emission-related components.
This code has become more common with the increase in diesel vehicles using SCR systems to meet emission standards.
Moderate – It is important to address this issue to ensure your vehicle's emission system is functioning properly.
Driving with a malfunctioning emission system may violate local emission laws and can lead to fines.
• Engine at operating temperature
• Vehicle in a safe, stationary position
The reductant control module is typically located near the DEF tank or in the engine compartment.
Q: Can I drive with a P06F3 code?
A: It's not recommended to drive for extended periods with this code as it can affect emissions and engine performance.
Q: What is a reductant control module?
A: It's a component in diesel vehicles that manages the diesel exhaust fluid system to reduce emissions.
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