Reductant Control Module Internal Temperature Sensor Range/Performance

Common symptoms

What you'll notice

• Check the reductant control module connections and wiring for any loose or damaged components.
• Test the internal temperature sensor using a multimeter to ensure it is functioning correctly.
• Replace the reductant control module internal temperature sensor if it is determined to be faulty.
• If all else fails, consider replacing the entire reductant control module, as it may be experiencing internal malfunctions that cannot be repaired.

Common causes

Most likely first

1. Malfunctioning or failing Reductant Control Module
2. Faulty internal temperature sensor
3. Wiring or connection issues with the Reductant Control Module
4. Insufficient or contaminated reductant fluid
5. Exhaust system leaks or damage

How to diagnose & fix

Work through it in order

1. Check engine light illuminated
2. Reduced engine power
3. Difficulty starting the engine
4. Decreased fuel efficiency
5. Poor vehicle performance