Engine-Codes - Cadillac - U026B Cadillac

U026B Cadillac Code - Lost Communication With Left Rear Short Range Radar Sensor Module

- Code Popularity: 2,997 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC U026B Cadillac?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Left Rear Short Range Radar Sensor Module
  • Left Rear Short Range Radar Sensor Module harness is open or shorted
  • Left Rear Short Range Radar Sensor Module circuit poor electrical connection
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How to Fix the DTC U026B Cadillac?

Check 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 pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the U026B Cadillac code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the U026B Cadillac Code Mean?

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules 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 module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Left Rear Short Range Radar Sensor Module has not been received.

U026B Cadillac Code - Lost Communication With Left Rear Short Range Radar Sensor Module

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