Nissan Frontier 2005–2006 — technical service bulletin
Bulletin NTB-10-045 · NHTSA communication 10033344 · issued Mar 19, 2010
Technical service bulletin
communication type
Engine and Engine Cooling
component
2005–2006
model years
2
vehicle entries
Official summary
Nissan: dtc p0420 (tw catalyst sys-bi) stored in the ecm. Confirm this bulletin applies-check the current ecm part number; compare your current ecm part number to chart a. Replace the exhaust manifold catalyst; reprogram the ecm. *pe
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.