Code Definition

U1115 — CAN bus Circuit communication from tilt and telescopic control module lost

System: Network Communication  |  Type: Manufacturer-Specific  |  Make: Toyota

About U1115

U1115 is a manufacturer-specific network communication diagnostic trouble code recorded for Toyota vehicles. It belongs to the U-prefix family of codes, which covers inter-module network communication (CAN, LIN, FlexRay, or similar) faults.

When U1115 is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

Scanning & clearing: Network (U) codes report communication faults between modules. When diagnosing U-codes, checking the vehicle's CAN bus integrity, supply/ground at each module, and reading all modules for related faults is usually the first step.

U1115 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

DTC U1115 is a Toyota specific network code set when a monitoring ECU, such as the main body ECU or gateway, fails to receive the expected CAN messages from the tilt and telescopic control module within the defined timeout. This module operates the electric steering column adjustment, moving the column for tilt and reach and often handling the automatic away and return positions linked to entry and exit. When its periodic bus messages stop, the monitoring module records U1115 and the powered column functions may stop working. The driver may find the steering column adjustment inoperative, with...

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