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Service bulletin ITB-09-031

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 id10030086
Published by NHTSA2009-07-31
Manufacturer's numberITB-09-031
Manufacturer's date2009-06-19
NHTSA componentENGINE AND ENGINE COOLING:ENGINE

NHTSA's summary

INFINITI: AFFECTED VEHICLES HAS THE MIL ON AND DTC P1421 STORED (COLD START CONTROL) IN ECM. *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

Trouble codes named

P1421

Vehicles listed
INFINITI QX562009

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

Other bulletins for the same vehicles and component
ITB17-042E2022-03-12. Service bulletin. DTC P0456 CAUSED BY EVAP LEAK AT VENT CONTROL VALVE O-RING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB150242021-05-10. Service bulletin. SERVICE INFORMATION After ECM reprogramming, the Calibration Verification Number (CVN) needs to be automatically calculated prior to State emissions testing (also known as Inspection Maintainence, I/M, or SMOG testing depending upon location). Allowing the vehicle to idle for 22 minutes will allow for faster CVN calculation. It is recommended that customers utilize this method if the vehicle needs to be tested for emissions soon after ECM reprogramming. See this bulletin for further detail.
ITB10058A2021-05-10. Service bulletin. IF YOU CONFRIM An oil leak at the right side block ball plug behind the alternator. ACTION: Use a punch to seat the block ball plug in the hole (refer to the Service Procedure). See this bulletin for further detail.
ITB140022021-05-10. Service bulletin. SERVICE INFORMATION Replacement Engine Control Modules (ECMs) for many newer Infiniti vehicles are now "Blank" ECMs. Blank ECMs come without software and must be programmed (not reprogrammed) before they will function. See this bulletin for further detail.
ITB17-042D2021-04-13. Service bulletin. INFINITI; DTC P0456 CAUSED BY EVAP LEAK AT VENT CONTROL VALVE O-RING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB15-024a2021-01-09. Service bulletin. 2005-2015 INFINITI VEHICLES; ECM REPROGRAMMING SERVICE INFORMATION This bulletin is no longer active. Please discard previous versions of ITB15-024.
ITB10-055a2021-01-08. Service bulletin. QX56; REVISED UPPER OIL PAN AND TIMING CHAIN CASE PROCEDURES This bulletin is no longer active. Please discard previous versions of ITB10-055.
ITB20-0192020-09-11. Service bulletin. VK56 CONNECTING ROD CAP BOLT SERVICE INFORMATION SERVICE INFORMATION A change has been made to the connecting rod cap bolt service part. The new service part (B in Figure 1) is visually different, but is a direct replacement for the original equipment part. IMPORTANT: See page 2 for the procedure to inspect the cap bolt service part for excessive stretch. If replacement of a single connecting rod cap bolt is indicated for any given connecting rod, both connecting rod cap bolts of the affected connecting rod must be replaced as a set.
DOR-M9J4S-072020-07-27. Service bulletin. These SKUs are Exhaust Manifolds with Catalytic Converters. The customer communication requested return of unsold inventory due to a loss of CARB certification. These SKUs can no longer be sold as they do not meet CARB standards, but parts on vehicles are not effected.
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