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Clifton B.
Clifton B., ASE Master Auto Tech
Category: Nissan
Satisfied Customers: 3844
Experience:  ASE Master Certified Tech, Nissan Master Certified Tech, 12 yrs. experience in auto repair.
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Check engine light on 2006 Altima. Code on engine is P0420

Customer Question

Check engine light on 2006 Altima. Code on engine is P0420 "Catalyst system below threshold bank 1". Had the converter replaced about seven months ago when the same code appeared factory referbished. Could the converter be going bad this quick again.
Submitted: 1 year ago.
Category: Nissan
Expert:  Clifton B. replied 1 year ago.

hi my name is ***** ***** i can help with your questions

Expert:  Clifton B. replied 1 year ago.

if the engine is running fine and the car drive good then yes your problem is a bad converter . you should get it replace with a new factory converter as the rebuilt one do not work for long as you can see with the one you now had .

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