U2627 Cadillac 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 Cadillac 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 Cadillac 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 Cadillac?
- 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 Cadillac?
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 Cadillac 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 Cadillac code?
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Frequently Asked Questions about U2627 Cadillac Code
1. What are the common symptoms of OBDII code U2627 in a Cadillac related to the Reductant Control Module?
The common symptoms include the check engine light coming on, poor vehicle performance, decreased fuel efficiency, and potential issues with the Selective Catalytic Reduction (SCR) system.
2. What can cause the Reductant Control Module to lose communication with the Reductant Level Sensor?
Potential causes can include damaged wiring or connectors between the Reductant Control Module and the Reductant Level Sensor, a faulty Reductant Level Sensor, or a malfunction within the Reductant Control Module itself.
3. How serious is the U2627 OBDII code related to the Reductant Control Module in a Cadillac?
While the vehicle may still be operable with this code, it is important to address it promptly to prevent potential issues with emissions control and to ensure optimal performance and fuel efficiency.
4. What steps can be taken to diagnose the U2627 code in a Cadillac?
Diagnosis typically involves using a scan tool to retrieve the specific fault code, inspecting the wiring and connectors for damage, testing the Reductant Level Sensor, and checking the communication between the Reductant Control Module and the Reductant Level Sensor.
5. Is it safe to continue driving with the U2627 code present in a Cadillac?
It is generally safe to drive the vehicle with this code, but it is recommended to have the issue diagnosed and repaired as soon as possible to prevent potential long-term damage to the emissions control system.
6. Can the U2627 code be cleared/reset without addressing the underlying issue in a Cadillac?
While the code can be cleared temporarily, it is likely to reappear until the root cause of the communication loss between the Reductant Control Module and Reductant Level Sensor is resolved.
7. Are there any DIY repair tips for addressing the U2627 code in a Cadillac?
DIY repair may involve checking and repairing damaged wiring or connectors, replacing the Reductant Level Sensor if faulty, or consulting a professional mechanic for further diagnosis and repair.
8. How much can a repair for the U2627 code related to the Reductant Control Module cost in a Cadillac?
The cost of repair can vary depending on the specific issue causing the communication loss, the labor rates in your area, and whether any components need to be replaced. It is advisable to obtain quotes from reputable mechanics.
9. Does the U2627 code affect emissions compliance in a Cadillac?
Yes, the U2627 code indicates a communication issue within the emissions control system, specifically the Reductant Control Module and Reductant Level Sensor, which can impact emissions compliance.
10. Can the U2627 code be a recurring issue in a Cadillac even after repair?
If the underlying cause of the communication loss is not effectively addressed during the repair process, the U2627 code may reoccur. It is important to ensure proper diagnosis and repair to prevent recurrence.
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