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 sensor that checks the temperature of a special tank in your car is not working right. It sends mixed-up signals, like when a thermometer can't decide if it's hot or cold.
The P205E code is triggered when the Engine Control Module (ECM) detects an intermittent or erratic signal from the reductant tank temperature sensor circuit.
The reductant tank temperature sensor monitors the temperature of the DEF (Diesel Exhaust Fluid) tank. If the sensor's signal is inconsistent or erratic, it can affect the proper functioning of the DEF system, which is crucial for reducing emissions in diesel engines.
• Check Engine Light illuminated
• Possible reduction in engine performance
• Increased emissions
• Faulty reductant tank temperature sensor
• Wiring issues or poor connections in the sensor circuit
• ECM software glitch or failure
DEF: Diesel Exhaust Fluid, a liquid used to reduce air pollution from diesel engines.
ECM: Engine Control Module, the computer that controls engine functions.
• Use an OBD-II scanner to verify the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the reductant tank temperature sensor for proper operation.
• Replace the reductant tank temperature sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Update or reprogram the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Ford F-250
• Chevrolet Silverado
• Ram 2500
• Regularly inspect and maintain the DEF system.
• Ensure connectors and wiring are secure and free of corrosion.
• Use quality DEF fluid to prevent contamination.
Sensor Issue
• Address the issue promptly to avoid increased emissions.
• Consult a professional mechanic if unsure about the repair process.
Check with your vehicle manufacturer as emissions-related components may be covered under warranty.
This code is commonly seen in diesel vehicles equipped with DEF systems, especially in colder climates where temperature fluctuations can affect sensor readings.
Moderate – While the vehicle may still operate, emissions could be affected, and ignoring the issue can lead to further complications.
Driving with a malfunctioning emissions system can lead to higher emissions and potential legal issues depending on regional regulations.
• Engine at operating temperature
• Vehicle parked on a level surface
The reductant tank temperature sensor is typically located on or near the DEF tank, which is usually at the rear of the vehicle.
Q: Can I drive with a P205E code?
A: While you can drive with this code, it's best to address it soon to ensure your emissions system is working properly.
Q: How does the reductant tank temperature sensor affect my vehicle?
A: It helps manage the DEF system, which reduces emissions. A faulty sensor can lead to increased emissions and potentially reduced engine performance.
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