# C1D18 on the 2026 Land Rover Range Rover

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here.

## Bulletins for this model year that name C1D18

- [11030749](https://open.wenmarpro.com/bulletins/11030749), 2026-04-06: Diagnostic Trouble Code \(DTC\) C1D18\-55 is set in the TPM during PDI and cannot be cleared using TOPIx Cloud.