Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with a sensor that checks the temperature of a special tank in your car. It's like a thermometer for a tank that holds a special liquid used to clean the car's exhaust.
The P2ADE code is triggered when the Engine Control Module (ECM) detects an issue with the circuit of the temperature sensor in the reductant tank, which is part of the vehicle's emissions control system.
The reductant tank temperature sensor is responsible for monitoring the temperature of the reductant (often urea or DEF) used in Selective Catalytic Reduction (SCR) systems to reduce NOx emissions. The 'B' circuit refers to a specific part of the sensor's circuit, and a fault here indicates an issue such as an open or short circuit, or a faulty sensor.
• Check Engine Light is on
• Possible increase in emissions
• Potentially reduced fuel efficiency
• Faulty reductant tank temperature sensor
• Open or short in the sensor circuit
• Corroded or damaged wiring/connectors
Reductant: A substance used in the SCR system to reduce NOx emissions.
SCR: Selective Catalytic Reduction, a system used to reduce emissions in diesel engines.
• Use an OBD-II scanner to confirm 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/connectors.
• Clear the code and test drive to ensure the issue is resolved.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Ford F-250
• Chevrolet Silverado
• Dodge Ram
• Regularly inspect wiring and connectors for damage.
• Ensure proper maintenance of the SCR system.
• Use high-quality DEF fluid.
Sensor Issue
• Address the issue promptly to avoid increased emissions.
• Consult a professional mechanic if unsure about repairs.
Check with your vehicle manufacturer for emissions-related warranty coverage.
This code has become more common with the increased use of SCR systems in diesel vehicles to meet emissions standards.
Moderate – While the vehicle may still operate, emissions could be affected, and it should be addressed soon.
Ignoring emissions-related codes can lead to failing emissions tests and potential fines.
• Engine at operating temperature
• Vehicle in a safe, stationary position
The reductant tank temperature sensor is typically located on or near the DEF tank, often under the vehicle near the rear axle.
Q: Can I drive with a P2ADE code?
A: You can drive, but it's best to fix it soon to avoid emissions issues.
Q: What happens if I ignore this code?
A: Ignoring it can lead to increased emissions and potential legal issues.
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