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Ask Chris(aka-Moose) Your Own Question
Chris(aka-Moose), Nissan Technician
Category: Nissan
Satisfied Customers: 621
Experience:  16 years of experience
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My short term fuel trim bank 1 reads (-.08%) st ftrim band 2

Customer Question

My short term fuel trim bank 1 reads (-.08%) st ftrim band 2 reads (3.9%) Long term ftrim bank 1 reads (7%) and Long term ftrim bank 2 reads (3.9%). I have replaced the pre catalytic converter O2 sensors on my 2005 Frontier 4.0L. What would be my next step with identifying my PO430 fault
JA: Have you located all of the vehicle's oxygen sensors? Are the wires leading to and from each intact and in good shape?
Customer: The two I replaced were in good shape, but I did not verify the post sensors on the catalytic converter
JA: Are you fixing your Frontier yourself? What have you tried so far?
Customer: Yes fixing myself and as stated in the first message, I replaced the pre catalytic converter O2 sensors because they were showing a lazy response.
JA: Anything else you want the mechanic to know before I connect you?
Customer: No, I believe I gave all the pertinent info
Submitted: 11 months ago.
Category: Nissan
Expert:  Jay replied 11 months ago.

Hello my name is ***** ***** thank you for your question

Did you replace the Catt Converters with one's from the dealer?