AutoCodes – Chevrolet – U2627 Chevrolet

U2627 Chevrolet 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 Chevrolet 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 3,179
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 18, 2020
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Code U2627 Chevrolet Description

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices. The devices have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device.
The Diagnostic Trouble Code (DTC) will set when a supervised periodic message that includes the transmitter device availability has not been received.
OBDII Code U2627 Chevrolet - Reductant Control Module Lost Communication With Reductant Level Sensor - AutoCodes.com
U2627 Chevrolet Code - Reductant Control Module Lost Communication With Reductant Level Sensor

What are the Possible Causes of the DTC U2627 Chevrolet?

  • 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 Chevrolet?

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 Chevrolet 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 Chevrolet code?

Need more information on how to fix the U2627 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U2627 Chevrolet code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U2627 Chevrolet Code

1. What are the common symptoms of OBDII code U2627 in a Chevrolet related to the Reductant Control Module?

- Common symptoms include the illumination of the Check Engine Light, poor fuel economy, and potential issues with the vehicle's emissions system.

2. What could cause the Reductant Control Module in a Chevrolet to lose communication with the Reductant Level Sensor?

- Potential causes include a faulty reductant level sensor, damaged wiring or connectors, software issues, or a malfunction within the control module itself.

3. How can I diagnose the source of the communication error between the Reductant Control Module and the Reductant Level Sensor in my Chevrolet?

- A thorough diagnostic scan using an OBDII scanner can help pinpoint the exact cause of the communication error. Checking the wiring, connectors, and sensor functionality is also recommended.

4. Is it safe to continue driving my Chevrolet with the U2627 OBDII code related to the Reductant Control Module issue?

- While the vehicle may still be drivable, it is recommended to address the issue promptly to prevent potential damage to the emissions system and ensure optimal vehicle performance.

5. Can I reset the U2627 code related to the Reductant Control Module issue in my Chevrolet without fixing the underlying problem?

- Resetting the code without addressing the root cause will likely result in the Check Engine Light reappearing once the system detects the ongoing communication error.

6. What are some repair tips for resolving the U2627 OBDII code in a Chevrolet?

- Start by inspecting the wiring and connectors for any damage or corrosion. Test the Reductant Level Sensor for proper functionality and consider reprogramming or replacing the Reductant Control Module if necessary.

7. Will fixing the U2627 code related to the Reductant Control Module issue in my Chevrolet improve fuel efficiency?

- Resolving the communication error can lead to improved fuel efficiency, as the proper functioning of the reductant system is crucial for optimal engine performance and emissions control.

8. Can a DIY enthusiast address the U2627 OBDII code related to the Reductant Control Module issue in a Chevrolet?

- DIY enthusiasts with automotive repair experience can attempt to diagnose and fix the issue, but it's recommended to consult a professional if unsure about the repair process.

9. How much can I expect to pay for repairing the U2627 code in a Chevrolet caused by communication loss with the Reductant Level Sensor?

- The cost of repairing the U2627 code can vary depending on the specific cause of the communication error, but it may involve sensor replacement, wiring repairs, or module reprogramming, with potential costs ranging from $100 to $500 or more.

10. Can the U2627 OBDII code related to the Reductant Control Module issue in a Chevrolet be a recurring problem?

- If the underlying issue is not properly addressed, the U2627 code may reoccur, emphasizing the importance of thorough diagnostics and effective repair to prevent future occurrences.

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