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U1101 Toyota Code - Lost Communication With Distance Control ECU

- Code Popularity: 1,989 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC U1101 Toyota?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • CAN communication system
  • Faulty Distance Control ECU
  • Faulty Seat Belt Control ECU
⚠ Does your Toyota have Safety Recalls? → Check here

How to Fix the DTC U1101 Toyota?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Search for U1101 Toyota Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U1101 Toyota code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code U1101 Toyota Description

The Seat Belt Control ECU receives signals from the master cylinder solenoid (Skid Control ECU) and the center airbag sensor via the CAN communication line. The distance control ECU receives signals from the ECM via the CAN communication line. The Diagnostic Trouble Code (DTC) will set when the Seat Belt Control ECU does not receive the signal from the Distance Control ECU.

OBDII Code U1101 Toyota - Lost Communication With Distance Control ECU - AutoCodes.com
U1101 Toyota Code - Lost Communication With Distance Control ECU

Need More Information on the Code?

Need more information on how to fix the U1101 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1101 Toyota code diagnosed by a professional: Find a repair shop in your area

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.

Code U1101 Toyota comments

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