Engine-Codes - Generic - U1154

U1154 Code - Lost Communications With Rear Seat Entertainment Assembly

- Code Popularity: 5,349 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC U1154?

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 Rear Seat Entertainment (RSE) Assembly
  • Rear Seat Entertainment Assembly harness is open or shorted
  • Rear Seat Entertainment Assembly circuit poor electrical connection
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How to Fix the DTC U1154?

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 U1154 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 U1154 Code Mean?

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. When a module receives a message for a critical operating parameter, the module records the identification number of the module which sent the message for the state of health monitoring/node alive messages. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. Once an identification number is learned by a module, it will monitor for that module node alive message. Each module on the class 2 serial data circuit is required to send a Node Alive message every 2 seconds. When no message is detected from a learned identification number for 5 seconds, a Diagnostic Trouble Code (DTC) U1154 is set.

U1154 Code - Lost Communications With Rear Seat Entertainment Assembly

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Code U1154 Information for Specific Makes

  • U1154 Buick Lost Communications With Rear Seat Entertainment Assembly
  • U1154 Cadillac Lost Communications With Rear Seat Entertainment Assembly
  • U1154 Chevrolet Lost Communications With Rear Seat Entertainment Assembly
  • U1154 GMC Lost Communications With Rear Seat Entertainment Assembly

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