Engine-Codes - Generic - U1088

U1088 Code - Invalid Or Missing Data For Inflatable Restraint Sensing And Diagnostic Module

- Code Popularity: 7,197 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC U1088?

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 Inflatable Restraint Sensing And Diagnostic Module
  • Inflatable Restraint Sensing And Diagnostic Module harness is open or shorted
  • Inflatable Restraint Sensing And Diagnostic Module circuit poor electrical connection
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How to Fix the DTC U1088?

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 U1088 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?

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

What Does the U1088 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) U1088 is set.

U1088 Code - Invalid Or Missing Data For Inflatable Restraint Sensing And Diagnostic Module

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Code U1088 Information for Specific Makes

  • U1088 Buick Lost Communications With Inflatable Restraint Sensing And Diagnostic Module
  • U1088 Cadillac Lost Communications With Inflatable Restraint Sensing And Diagnostic Module
  • U1088 Chevrolet Lost Communications With Inflatable Restraint Sensing And Diagnostic Module
  • U1088 GMC Lost Communications With Inflatable Restraint Sensing And Diagnostic Module
  • U1088 Pontiac Invalid Or Missing Data For Inflatable Restraint Sensing And Diagnostic Module

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Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

  • Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
  • Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
  • Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
  • Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.
Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.