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Tim Mohr
Tim Mohr, ASE MASTER TECH
Category: Nissan
Satisfied Customers: 560
Experience:  30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL
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I replaced the ecm and have the problem with the same engine

Customer Question

I replaced the ecm and have the problem with the same engine code po450. I disconected the battery replaced the ecm, reconected the battery started it, had no engine light, turned it off, turned it back on and the engine light came back on. Went and had the engine light checked and same code po450
Submitted: 15 days ago.
Category: Nissan
Expert:  Jay replied 15 days ago.

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

I am currently working today. Can we continue this later this evening? Say around 6pm EST?

Customer: replied 15 days ago.
Expert:  Jay replied 15 days ago.

In the mean time, here is the complete diagnostics for that code.

https://dl.dropboxusercontent.com/u/105565483/2a.pdf

Customer: replied 14 days ago.
That part i replaced, most diagrams show it underneath the truck on driver side by rear wheel and it looks exactly like that in the diagram. Nissan shows that part to be a Boost Sensor #25085-1s707 oem. EVAP control system pressure sensor is #22365-1s oem is in engine compartment passenger side across aircleaner.
Expert:  Jay replied 14 days ago.

Did you follow the diagnostic steps I provided with the information?

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