Engine-Codes - Generic - U2630

U2630 - Reductant Control Module Lost Communication With Reductant Tank Temperature Sensor 2

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

U2630 Possible Causes

  • Faulty Reductant Tank Temperature Sensor 2
  • Reductant Tank Temperature Sensor 2 harness is open or shorted
  • Reductant Tank Temperature Sensor 2 circuit poor electrical connection
  • Faulty Reductant Control Module

How is the U2630 code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the U2630 code

Labor: 1.0

The cost to diagnose the U2630 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
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Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

U2630 Meaning

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.

More Information

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Information for specific makes

  • U2630 BUICK Reductant Control Module Lost Communication With Reductant Tank Temperature Sensor 2
  • U2630 CADILLAC Reductant Control Module Lost Communication With Reductant Tank Temperature Sensor 2
  • U2630 CHEVROLET Reductant Control Module Lost Communication With Reductant Tank Temperature Sensor 2
  • U2630 GMC Reductant Control Module Lost Communication With Reductant Tank Temperature Sensor 2

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