# Other SSM000031 \- 31MAR26

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Other
- NHTSA id: 11030749
- Published by NHTSA: 2026\-04\-06
- Manufacturer's number: SSM000031 \- 31MAR26
- Manufacturer's date: 2026\-03\-31
- NHTSA component: UNKNOWN OR OTHER

## NHTSA's summary

Diagnostic Trouble Code \(DTC\) C1D18\-55 is set in the TPM during PDI and cannot be cleared using TOPIx Cloud.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11030749-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11030749-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Trouble codes named

C1D18

## Vehicles listed

- 2026 LAND ROVER DEFENDER
- 2025 LAND ROVER DISCOVERY
- 2026 LAND ROVER RANGE ROVER
- 2027 LAND ROVER RANGE ROVER SPORT

JSON: [/v1/bulletins/11030749](/v1/bulletins/11030749)

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