P20AE Code - Reductant Metering Unit Temperature Sensor Circuit Low
Quick Answer
The P20AE diagnostic trouble code (DTC) refers to a Reductant Metering Unit Temperature Sensor Circuit Low. Common causes include Faulty temperature sensor, Wiring issues in the temperature sensor circuit, Corrosion or damage to the sensor connector. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P20AE indicates Reductant Metering Unit Temperature Sensor Circuit Low.
- Common causes
- Common causes include Faulty temperature sensor, Wiring issues in the temperature sensor circuit, Corrosion or damage to the sensor connector.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P20AE Description
The P20AE diagnostic trouble code (DTC) refers to a Reductant Metering Unit Temperature Sensor Circuit Low. This code indicates that there is a problem with the temperature sensor circuit in the vehicle's reductant metering system. The reductant metering system is responsible for controlling the injection of diesel exhaust fluid (DEF) into the exhaust stream to reduce harmful emissions.
Common Causes of P20AE
- Faulty temperature sensor
- Wiring issues in the temperature sensor circuit
- Corrosion or damage to the sensor connector
- Issues with the reductant metering unit itself
- Malfunctioning engine control module (ECM)
Symptoms of P20AE
- Check engine light illuminated
- Reduced fuel efficiency
- Increased exhaust emissions
- Difficulty starting the vehicle
- Reduced engine performance
How to Fix P20AE
- Use an OBD-II scanner to read and record the DTC, then clear the code to see if it returns after driving the vehicle.
- Inspect the temperature sensor and its wiring for any visible damage or corrosion, and replace as necessary.
- Check the sensor connector for proper connection and corrosion, and clean or repair as needed.
- Test the reductant metering unit to ensure it is functioning correctly, and replace if necessary.
- If the issue persists, consult a professional mechanic to further diagnose and repair the problem.
Cost to Fix P20AE
The cost of repairing a Reductant Metering Unit Temperature Sensor Circuit Low code can vary depending on the specific cause of the issue and the make and model of the vehicle. In general, the cost of parts for this repair can range from $50 to $200, while labor costs typically range from $100 to $300. It's important to keep in mind that these are rough estimates, and actual repair costs can vary based on factors such as location, vehicle type, and the specific diagnostic and labor rates at auto repair shops. It's recommended to obtain quotes from local auto repair shops for a more accurate estimate.
Need more information about the P20AE code?
Need more information on how to fix the P20AE code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P20AE code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P20AE Code
No Frequently Asked Questions about P20AE Code found.
Discuss the causes and fixes for P20AE OBDII Code
Code P20AE comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.