Need some serious Help Please

[sjanderson]

I was getting codes P011 & P0021 and took my 02 QX4 into the dealership. I was advised that both IVT vavle were bad. $630.00 later I thought the problem was resolved. 2 days later the SES light was back on. I went back to the dealership and was told it was my IVT sensor. $100.00 and a week later again thinking it was fixed, the SES light came on again. Back to the dealership, oil presure was checked to be okay, oil pressure flush was done and all tested good. 4 hours later the SES light was back on, same codes. Any thoughts or suggestions?

[burijon]

After reading your FSM for a few minutes it could be your original problem of crankshaft position sensors or camshaft position sensor. The correct diagnosis could depend on which one to replace(obviously). Either the IVT or the other sensors. Could possibly be the harness for the IVT as well

Did you ever get those sensors taken care of from your previous postings?

Start at EC 162 in the FSM. Even if you don't fix it yourself you can at least try to have one up on the dealer.

With the money you have spent and are spending you might want to take it to another dealer for satisfaction.

I wish NISTECH would read this and give an answer.

This NICO post has the same codes as yours but for a Maxima. It might not fix your problem but could give you more insight into why this is happening.zerothread?id=197101