# Service bulletin SB\-01\-012\-09

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: 10030349
- Published by NHTSA: 2009\-09\-23
- Manufacturer's number: SB\-01\-012\-09
- Manufacturer's date: 2009\-04\-09
- NHTSA component: ENGINE AND ENGINE COOLING:ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

## NHTSA's summary

MAZDA: MIL COMES ON WITH P2004/CHECK VALVE STUCK OPEN. SOME VEHICLES MAY EXPERIENCE AN MIL THAT COMES ON WITH DTC P2004 \(VARIABLE TUMBLE SHUTTER VALVE STUCK OPEN\). THE CAUSE MAY BE THE CHECK VALVE IN THE INTAKE MANIFOLD VACUUM CHAMBER BEING STUCK OPEN. CHECK VALVE HAS NOW BEEN UPDATED. \*PE

## 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

Engine, Exhaust and emissions, Exhaust manifold, pipes and muffler

## Trouble codes named

P2004

## Vehicles listed

- 2004 to 2009 MAZDA MAZDA3
- 2006 to 2009 MAZDA MAZDA5

## Other bulletins for the same vehicles and component

- [MT\-002\-19](/bulletins/10165676.md), 2019-10-04, Service bulletin: ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. If an engine assembly is replaced after a catastrophic internal mechanical failure, clean the intake manifold internally before installing a replacement engine assembly. If the intake manifold is not cleaned properly, the replacement engine may fail prematurely. Metallic debris from the old engine \(with catastrophic internal mechanical failure\) may rest inside the intake manifold. When the new engine assembly is installed, debris in the intake manifold will be ingested into the new engine and cause internal damage.

JSON: [/v1/bulletins/10030349](/v1/bulletins/10030349)

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