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Service bulletin NTB02020

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 id629507
Published by NHTSA2002-04-02
Manufacturer's numberNTB02020
Manufacturer's date2002-02-18
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:GASOLINE

NHTSA's summary

SUBJECT REGARDING KNOCKING NOISE ABOVE IDLE (800-1100 RPM). *YD

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

Vehicles listed
NISSAN FRONTIER1999, 2000, 2001, 2002
NISSAN XTERRA2000, 2001, 2002

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

Recalls for the same vehicles and component
20022042002-11-13. Engine

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
060092006-03-01. Service bulletin. MALFUNCTION INDICATOR LAMP ON WITH DIAGNOSTIC TROUBLE CODE U1000 OR U1010 STORED IN ENGINE CONTROL UNIT. *AK
050402005-08-18. Service bulletin. MIL WITH DTC P0400, P0402, ROUGH IDLE, DRIVABILITY INCIDENTS, DIFFICULTY SETTING EGR SRT. *SC
05040A2005-08-16. Service bulletin. 1998-2000 FRONTIER & XTERRA WITH KA24 ENGINE; MIL WITH DTC P0400, P0402, ROUGH IDLE, DRIVABILITY INCIDENTS, DIFFICULTY PASSING I/M TEST FOR NO X UPDATE *SC
040832004-08-24. Service bulletin. SUPERCHARGER NOISE AT IDLE AND LACK OF POWER. *TT
04002A2004-02-12. Service bulletin. MALFUNCTION INDICATOR LAMP ON WITH MULTIPLE FRONT/REAR O2 SENSOR DIAGNOSTIC TROUBLE CODES P0134, P0154, P0140, P0160, P0132, P0152, P0138 AND P0158. *TT THIS BULLETIN REPLACED 04002 DATED 02/05/2004. *TT
NTB00006C2003-12-19. Service bulletin. ECM REPROGRAMMING FOR CERTAIN NISSAN VEHICLES AS WELL AS ALL 2000 AND LATER MODELS. *TT
NTB020442002-09-23. Service bulletin. SUBJECT REGARDING COOLANT LEAK FROM INTAKE MANIFOLD WATER OUTLET. *JG
NTB020442002-05-22. Service bulletin. SUBJECT REGARDING COOLANT LEAK FROM INTAKE MANIFOLD WATER OUTLET. *JG
NTB010382002-04-30. Service bulletin. SUBJECT REGARDING RIGHT HAND EXHAUST MANIFOLD CRACKING. *JG
NTB00096A2001-11-19. Service bulletin. SUBJECT REGARDING ENGINE ROUGH IDLE/IDLE VIBRATION. *YD