# Service bulletin 121599

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: 616159
- Published by NHTSA: 2001\-02\-13
- Manufacturer's number: 121599
- Manufacturer's date: 2000\-11\-01
- Replaces: 121599
- NHTSA component: ELECTRICAL SYSTEM:IGNITION:MODULE

## NHTSA's summary

VOLUNTARY EMISSIONS RECALL 00E\-AO1 \- FAULT ACCESS / O2 READINESS CODES. BMW HAS DETERMINED THAT DUE TO AN ENGINE CONTROL MODULE SOFTWARE ERROR, A COMMUNICATION CONFLICT EXISTS BETWEEN THE ENGINE CONTROL MODULE AND THE TRANSMISSION CONTROL MODULE. THIS MAY LEAD TO DIFFICULTIES OR PREVENT COMMUNICATION AND DATA TRANSMISSION BETWEEN THE ENGINE CONTROL MODULE AND AN OFF\-BOARD SCAN TOOL. SUCH A SCAN TOOL MAY BE USED DURING AN OFFICIAL VEHICLE INSPECTION, SMOG CHECK, OR AN ENGINE REPAIR; AND / OR THE OXYGEN SENSOR READINESS CODE MAY NOT SET ON AFFECTED VEHICLES. \*TT

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Electrical system, Ignition

## Vehicles listed

- 1999 to 2000 BMW E36
- 1999 to 2000 BMW E37
- 1999 to 2000 BMW E39
- 1999 to 2000 BMW E46

JSON: [/v1/bulletins/616159](/v1/bulletins/616159)

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