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Service bulletin 2024811/2

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10170257
Published by NHTSA2020-01-17
Manufacturer's number2024811/2
Manufacturer's date2014-12-02
NHTSA componentPOWER TRAIN; ELECTRICAL SYSTEM

NHTSA's summary

Gearbox code P1703 not clearing in Guided Fault finding Condition: There is no customer complaint the fault code is logged as a result of connecting the diagnostic tester When the fault memory is read using Guided Fault finding the following codes may be logged: P170300 Limp home, control unit reset (located in diagnostic address 02 Transmission control module) U1111 Function limitation due to missing message (located in diagnostic address 81 Gear Shift Control Module (GSM) Technical Background: Due to a communication error between the tester and the transmission control module the above faults may be logged even though there is no problem with the vehicles gearbox system. If these faults are logged and there is no gearbox problem reported, clear these codes using vehicle Self Diagnosis.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Transmission and driveline

Trouble codes named

P1703, U1111

Vehicles listed
BENTLEY MULSANNE2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

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