U2628 Buick Code - Reductant Control Module Lost Communication With Reductant Concentration Sensor
Quick Answer
Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Reductant Concentration Sensor, Reductant Concentration Sensor harness is open or shorted, Reductant Concentration 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
- U2628 Buick indicates Reductant Control Module Lost Communication With Reductant Concentration Sensor.
- Common causes
- Common causes include Faulty Reductant Concentration Sensor, Reductant Concentration Sensor harness is open or shorted, Reductant Concentration 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 U2628 Buick 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 U2628 Buick?
- Faulty Reductant Concentration Sensor
- Reductant Concentration Sensor harness is open or shorted
- Reductant Concentration Sensor circuit poor electrical connection
- Faulty Reductant Control Module
How to Fix the DTC U2628 Buick?
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 U2628 Buick 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 U2628 Buick code?
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Frequently Asked Questions about U2628 Buick Code
1. What are the common symptoms of OBDII code U2628 in a Buick related to the Reductant Control Module losing communication with the Reductant Concentration Sensor?
- Common symptoms include the Malfunction Indicator Lamp (MIL) or Check Engine Light illuminating, reduced engine performance, and potential failure to meet emission standards.
2. What are some possible causes for the U2628 code in a Buick?
- Possible causes include damaged wiring or connectors between the Reductant Control Module and the Reductant Concentration Sensor, a faulty sensor, or a malfunctioning control module.
3. How can I diagnose the U2628 code in my Buick?
- Diagnosing the code involves using a diagnostic scanner to retrieve the specific fault codes, checking the wiring and connectors for any damage, testing the sensor for proper functionality, and inspecting the control module.
4. Can I still drive my Buick with the U2628 code present?
- It is generally not recommended to drive your Buick with the U2628 code present, as it can lead to reduced engine performance and potential emission issues. It is best to address the underlying problem promptly.
5. How can I repair the U2628 code in my Buick?
- Repairing the U2628 code may involve repairing or replacing damaged wiring or connectors, replacing the faulty Reductant Concentration Sensor, or reprogramming or replacing the Reductant Control Module.
6. Can I reset the U2628 code in my Buick without fixing the underlying issue?
- While you can clear the code temporarily, it is recommended to address the underlying issue causing the U2628 code to prevent further problems and ensure proper vehicle operation.
7. How much does it typically cost to repair the U2628 code in a Buick?
- The cost of repairing the U2628 code can vary depending on the specific cause of the issue, but it may range from $200 to $600, including parts and labor.
8. Will the U2628 code cause my Buick to fail an emissions test?
- Yes, the U2628 code can cause your Buick to fail an emissions test due to potential issues with the reductant system and overall emission control.
9. How long does it take to repair the U2628 code in a Buick?
- The repair time for the U2628 code can vary based on the complexity of the issue and the availability of parts, but it generally takes a few hours to a full day for diagnosis and repair.
10. Is the U2628 code a common issue in Buick vehicles?
- While it may not be the most common code, the U2628 related to the Reductant Control Module losing communication with the Reductant Concentration Sensor can occur in Buick vehicles, especially in models with emission control systems.
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