Loss of communication with traction control system
U1040 — Loss of communication with traction control system
System: Network Communication | Type: Manufacturer-Specific | Make: Holden
U1040 is a manufacturer-specific network communication diagnostic trouble code recorded for Holden vehicles. 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.
U1040 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 | U1040 |
| System | Network Communication |
| Type | Manufacturer-Specific |
| Make | Holden |
| Causes | — |
| Diag. Assistant | — |
| Video | — |
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