U2627 Code - Reductant Control Module Lost Communication With Reductant Level Sensor
Quick Answer
Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Reductant Level Sensor, Reductant Level Sensor harness is open or shorted, Reductant Level Sensor circuit poor electrical connection. 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
- U2627 indicates Reductant Control Module Lost Communication With Reductant Level Sensor.
- Common causes
- Common causes include Faulty Reductant Level Sensor, Reductant Level Sensor harness is open or shorted, Reductant Level Sensor circuit poor electrical connection.
- 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.
Code U2627 Description
The Diagnostic Trouble Code (DTC) will set when a supervised periodic message that includes the transmitter device availability has not been received.
What are the Possible Causes of the DTC U2627?
- Faulty Reductant Level Sensor
- Reductant Level Sensor harness is open or shorted
- Reductant Level Sensor circuit poor electrical connection
- Faulty Reductant Control Module
How to Fix the DTC U2627?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the U2627 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the U2627 code?
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Get the U2627 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- U2627 Buick — Reductant Control Module Lost Communication With Reductant Level Sensor
- U2627 Cadillac — Reductant Control Module Lost Communication With Reductant Level Sensor
- U2627 Chevrolet — Reductant Control Module Lost Communication With Reductant Level Sensor
- U2627 GMC — Reductant Control Module Lost Communication With Reductant Level Sensor
Frequently Asked Questions about U2627 Code
1. What are the common symptoms of OBDII code U2627?
The common symptoms of code U2627 include the Check Engine Light being illuminated on the dashboard, reduced engine performance, and potential issues with the reductant system.
2. What could cause the Reductant Control Module to lose communication with the Reductant Level Sensor?
Possible causes of this issue may include a faulty Reductant Control Module, a damaged Reductant Level Sensor, wiring problems, or a poor connection between the components.
3. How can I diagnose the U2627 code related to the Reductant Control Module?
Diagnosing the U2627 code typically involves using a diagnostic scanner to retrieve the fault codes, checking the wiring and connections between the Reductant Control Module and Reductant Level Sensor, and testing the sensor for proper functionality.
4. Can I continue driving my vehicle with the U2627 code present?
It is not recommended to ignore the U2627 code and continue driving your vehicle, as it can lead to more serious issues with the reductant system and potentially affect the overall performance of the vehicle.
5. How can I repair the communication issue between the Reductant Control Module and Reductant Level Sensor?
Repairing the communication issue may involve replacing the faulty Reductant Control Module or Reductant Level Sensor, repairing damaged wiring or connections, and ensuring all components are properly connected and functioning.
6. Are there any DIY tips for troubleshooting the U2627 code?
DIY tips for troubleshooting the U2627 code include checking for loose connections, inspecting the wiring for any damage, and ensuring that the Reductant Control Module and Reductant Level Sensor are securely in place.
7. Will resetting the fault codes clear the U2627 code?
Resetting the fault codes may temporarily clear the Check Engine Light, but if the underlying issue causing the U2627 code is not addressed, the code is likely to reappear.
8. Can a professional mechanic help with diagnosing and repairing the U2627 code?
Yes, a professional mechanic with experience in diagnosing and repairing automotive codes, particularly related to the reductant system, can help identify the root cause of the U2627 code and perform the necessary repairs.
9. What is the importance of the Reductant Control Module and Reductant Level Sensor in the vehicle's emissions system?
The Reductant Control Module and Reductant Level Sensor play a crucial role in the emissions system by monitoring and controlling the amount of reductant (such as diesel exhaust fluid) injected into the exhaust stream to reduce harmful emissions.
10. How can regular maintenance help prevent issues related to the U2627 code?
Regular maintenance, including checking and replacing components of the reductant system as recommended by the manufacturer, can help prevent issues related to the U2627 code and ensure the proper functioning of the emissions system in the vehicle.
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