Code Definition

U0136 — Lost Communication With Electronic Limited Slip Differential

System: Network Communication  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About U0136

U0136 is a generic (obd-ii standard) network communication diagnostic trouble code. It belongs to the U-prefix family of codes, which covers inter-module network communication (CAN, LIN, FlexRay, or similar) faults.

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.

Because U0136 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The Electronic Limited Slip Differential (ELSD) control module manages an electronically controlled clutch in the differential to bias torque between the wheels for traction and stability, and it shares status with the ABS and stability module and other drivetrain controllers over the CAN data network. DTC U0136 is a generic network code set when a receiving module stops receiving valid CAN messages from the ELSD control module for a calibrated period while the ignition is on and the rest of the network is communicating. The fault usually means the ELSD module has gone offline due to loss of p...

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