# Service bulletin TT261402

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: 10238591
- Published by NHTSA: 2023\-07\-05
- Manufacturer's number: TT261402
- Manufacturer's date: 2014\-11\-07
- NHTSA component: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\); ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM

## NHTSA's summary

Disconnect both O2 sensors \(front and rear\), start engine and let idle. Check MVB's 41/4 and 136/4 and verify have both changed from a 1 to a 0 \(you may have to drive the car 4 miles to get them to reset to 0\). Also a key cycle may be required for values to reset. This forces the ECM to re\-learn the O2 sensor adaptation. Once MVB 41/4 and 136/4 read 0, re\-connect the O2 sensors, road test and recheck for faults.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2014/MC-10238591-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2014/MC-10238591-9999.pdf)

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

## Components

Electrical system, Engine, Engine control module

## Vehicles listed

- 2010 to 2015 VOLKSWAGEN GOLF
- 2009 to 2015 VOLKSWAGEN JETTA
- 2009 to 2014 VOLKSWAGEN JETTA SPORTWAGEN
- 2009 to 2015 VOLKSWAGEN PASSAT

## Other bulletins for the same vehicles and component

- [24Z5UPDATE](/bulletins/10252244.md), 2024-04-01, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE. Software
- [UPDATE24Y4](/bulletins/10252243.md), 2024-04-01, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE; UNKNOWN OR OTHER; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE. MPI Software
- [UPDATE24X7](/bulletins/10252242.md), 2024-04-01, Service bulletin: UNKNOWN OR OTHER; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE. 2.0L MPI Software
- [UPDATE24BG](/bulletins/10252236.md), 2024-04-01, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\). ECM Software
- [UPDATE24AE](/bulletins/10252234.md), 2024-04-01, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\); POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). 1.8T ECM/TCM Software
- [UPDATE23L3](/bulletins/10252231.md), 2024-04-01, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\); ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE. TDI ECM/EDC Software
- [Edition32](/bulletins/10242387.md), 2023-09-18, Service bulletin: PARKING BRAKE; SEATS; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE. VW Elsa Newsletter
- [Edition59](/bulletins/10242379.md), 2023-09-18, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). VW Elsa Newsletter
- [Edition54](/bulletins/10242376.md), 2023-09-18, Service bulletin: SERVICE BRAKES; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE. VW Elsa Newsletter
- [Edition94](/bulletins/10242369.md), 2023-09-18, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE. VW Elsa Newsletter

JSON: [/v1/bulletins/10238591](/v1/bulletins/10238591)

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