I hope the veterans here can help me out with this:

I recently bought a used Max with 120k miles on it and the ECU throwing up 0803 (Absolute Pressure Sensor / Boost Sensor) as well as 0302 (Hi / Low EGR flow). Anyway, I went out and bought a new Boost Sensor from my local dealer, replaced it without any difficulty and reset the ECU. After a while the CEL came back on, I pulled the code and got 0505 (the 'all clear' code). Reset the ECU again only to have the CEL return, but this time it gave me 0803 and 0302.

Can 0803 mean something besides the Boost Sensor could be busted? Or is it possible an EGR problem would set off both codes? This is driving me crazy! Any input would be much appreciated.

 

read my post:

http://forums.maxima.org/showthread....highlight=0302

 

Maybe its a circuit fault. Whatever that means. I just too the CEL light bulb out.

 

don't you have to reset the light yourself?

 

yea I heard if you fix it yourself, you should reset the light.
it's in the ECU stickie

 

I've been getting the 0803 code as well. Try taking off the IACV like steven mentioned here: http://forums.maxima.org/showthread....highlight=0302[/URL] Let me know if this fixes your problem.
Thanks

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