Frontier 2WD L4-2.5L (QR25DE) (2005)
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Technical Service Bulletin # 10-045
Date: 100319
Engine Controls - DTC P0420 Stored In The ECM
Classification: EC10-008
Reference: NTB10-045
Date: March 19, 2010
2005-2006 FRONTIER WITH QR25 ENGINE; DTC P0420 (TW CATALYST SYS-B1) STORED IN THE ECM
APPLIED VEHICLE: 2005-2006 Frontier (D40)
APPLIED ENGINE: QR25 ONLY
IF YOU CONFIRM:
DTC P0420 (TW CATALYST SYS-B1) is stored in the ECM,
ACTIONS:
Step A: Confirm this bulletin applies:
^ Check the Current ECM Part Number.
^ Compare your Current ECM Part Number to Chart A.
If that part number does not match one in Chart A, this bulletin does not apply. Go back to ASIST for further diagnostic and repair information.
Step B: Replace the exhaust manifold catalyst.
Step C: Reprogram the ECM.
IMPORTANT:
The purpose of "ACTIONS" (above) is to give you a quick idea of the work you will be performing. You MUST closely follow the entire Service
Procedure as it contains information that is essential to successfully completing this repair.
PARTS INFORMATION
