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Service bulletin S-SB-0008-16

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 id10132874
Published by NHTSA2018-04-02
Manufacturer's numberS-SB-0008-16
Manufacturer's date2016-10-20
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

TSB: Some 2012 ? 2013 model year iQ vehicles may exhibit one or more of the following conditions: * Rough idle condition. * Idle speed momentarily drops at idle. * MIL ?ON? with one or more of the following DTCs: P1603, P1604 and/or P1605. These may be caused by excessive carbon build-up on piston head. Follow the Repair Procedure in this Service Bulletin to address this condition

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

Engine

Trouble codes named

P1603, P1604, P1605

Vehicles listed
SCION IQ2012 to 2013

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