EV Diagnostics
Source-backed diagnostic reference

C1729 EV diagnostic code

Transfer Case unable to transition between 4H and 4L

Reference status: This page preserves source-backed code definitions for discovery. Manufacturer/model applicability, repair steps and safety conclusions are not treated as verified unless a manufacturer-specific verified report is available.

Reference definitions

  • OTHER: Transfer Case unable to transition between 4H and 4L Source

Search and canonical URL

Capitalization, underscores, hyphens, colons and spaces are normalized to this canonical code identity so alternate scan-tool formats do not create duplicate pages.