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Hello all I had to replace the ecu and idel air control valve on my 01 qx4 I replaced the them both and got a used ecu due to my original being fried and it was programmed to the car I’m not sure if it was done correctly because the shop I had it at kept it for 6 months and couldn’t figure out why it would run after they replaced everything well I done some code scanning and found some for the immobilizer p1610 and p1615 also one for p1320 I’m assuming these both stop the car from starting because of the immobilizer

I have since tried a couple other immobilizer with there responding keys with no luck

I have no security lights on though so am kinda confused am looking at buying a programmer to try and reprogram the immobilizer but haven’t found any that aren’t in the thousand dollar range that i can justify spending

Any help would be greatly appreciated
Thanks rob


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It sounds to me like the ecu and immobilzer are not paired to each other. From factory these two components are married together to avoid people stealing cars and replacing immobilizers or stealing other ecu’s. My best advice is to find a shop that can pair the two components together, however it may not be possible because these things are tied to the vin. If the vins dont match they probably wont work.
 
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