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Service bulletin P4120a

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 id10178244
Published by NHTSA2020-08-09
Manufacturer's numberP4120a
Manufacturer's date2020-07-08
NHTSA componentELECTRICAL SYSTEM:IGNITION:MODULE; ELECTRICAL SYSTEM

NHTSA's summary

VOLUNTARY SERVICE CAMPAIGN ON 1990-93 300ZX IGNITION POWER TRANSISTOR UNIT Service Campaign ID # P4120 is no longer active. • Repair orders opened after this bulletin’s published date are no longer eligible for reimbursement under Campaign ID # P4120. • Discard all previous versions of P4120.

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

Electrical system, Ignition

Vehicles listed
NISSAN 300ZX1991, 1992, 1993

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
NTB941171995-03-17. Service bulletin. VOLUNTARY SERVICE CAMPAIGN ON IGNITION POWER TRANSISTOR UNIT. *TW