# Service bulletin D154 UPS3926\-2 \- 16SEP26

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: Service bulletin
- NHTSA id: 11038286
- Published by NHTSA: 2026\-10\-07
- Manufacturer's number: D154 UPS3926\-2 \- 16SEP26
- Manufacturer's date: 2026\-09\-16
- NHTSA component: POWER TRAIN

## NHTSA's summary

The Powertrain Control Module \(PCM\) software has a concern that can lead to PCM reset when the engine is in catalyst heating or catalyst warming. This is accompanied by a Malfunction Indicator Lamp \(MIL\) on the instrument panel cluster.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11038286-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11038286-9999.pdf)

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

## Components

Transmission and driveline

## Vehicles listed

- 2026 LAND ROVER RANGE ROVER
- 2027 LAND ROVER RANGE ROVER SPORT

## Recalls for the same vehicles and component

- [26V607000](/recalls/nhtsa/26V607000.md), 2026-09-23: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)

## Other bulletins for the same vehicles and component

- [SSM76508 \- 11SEP26](/bulletins/11038296.md), 2026-10-07, Other: POWER TRAIN. Diagnostic Trouble Code stored in the Powertrain Control Module\(PCM\). The DTC may be unable to be cleared and may return to a confirmed status after three drive cycles.
- [SSM76507 \- 16SEP26](/bulletins/11038295.md), 2026-10-07, Other: POWER TRAIN. Malfunction Indicator Lamp \(MIL\) illuminated.
- [SSM76497 \- 21AUG26](/bulletins/11037121.md), 2026-09-08, Other: POWER TRAIN. Engine MIL Illuminated With Crankshaft Position Correlation DTCs Stored
- [SSM76457 \- 21MAY26](/bulletins/11033267.md), 2026-06-03, Other: POWER TRAIN. Amber MIL being displayed on the Instrument Panel Cluster on vehicles equipped with a Gen4 transmission.
- [SSM76454 \- 12MAY26](/bulletins/11033264.md), 2026-06-03, Other: POWER TRAIN. Malfunction Indicator Lamp \(MIL\) is illuminated on the instrument panel.
- [TUCC\_APR2026\_31](/bulletins/11032550.md), 2026-05-08, Other: POWER TRAIN. COMBUSTION INSTABILITY
- [SSM000030 \- 26MAR26](/bulletins/11030748.md), 2026-04-06, Other: POWER TRAIN. Malfunction Indicator Lamp \(MIL\) is illuminated on the instrument panel.

JSON: [/v1/bulletins/11038286](/v1/bulletins/11038286)

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