my check engine light has been on from time to time and i went to pull the codes and it gave me P2A00 and P2A03

P2A00 02 Sensor Circuit Range/Performance Bank 1 Sensor 1
p2A03 02 Sensor Circuit Range/Performance Bank 2 Sensor 1

can anyone indentify what my problems are? if i should take it to the shop and have them diagnose it and fix it? Anyone who had this issue before and how you fixed it . please any help would you appricated thanks.

 

What Year car is it?

What mods do you have?


http://my350z.com/forum/maintenance-...503-p2a00.html

http://my350z.com/forum/intake-exhau...gine-code.html

 

its an 2006 Coupe mods are 5/16 plenum spacers and Jwt intake charger and Berks HFC

 

how many miles? The codes you are getting are saying that your O2 sensors located ON the exhaust manifolds are throwing errors and need to be replaced. It will cause gas mileage to suffer and could cause catalytic converter failure to happen faster than usual if not addressed reasonably soon.

 

yup. o2 sensors on the manifolds. weird how both of them threw codes tho. maybe try an ecu reset and see how it goes?

 

So with that being said....i got 2 brand new 02 sensors replaced and driven it for a good about 100 miles and what do you know the CHECK ENGINE LIGHT came right back on...this is a pain in the *** and more help would be nice..

 

same codes? i wonder if there is an ecm reprogram available...you could check with the dealer.

 

I have been having this same problem for almost 2 years now and I have not been able to figure out what is causing it. Did you ever get it figured out?

 

BUMP

Anyone?

 

Im following up with this thread. I have some mods: crawford upper plenum, 1inch tb spacer, cosmo racing k&n, kinetix cats, cat back exhaust. just replaced the 02 sensors, upstream ones. did the downstream last summer. 119k miles. Im getting the slightly high idle. i bought /installed the jet chip MAF sensor feeling it would help the ecu reading of all the extra air, but i still have the codes p1084, p2a00, p2a03. i haven't replaced the cam pos sensors yet but i will after i speak with the jet chip tech support today. i need to clean my tb so while its off i will. could this also be getting caused the the idle air control valve? and would all these additional reading be corrected with an osiris ecu tune?

 

Anyone find a solution? I have had my tuner check for leaks, cleaned MAF, replaced Bank 1 Senor 1 (I only am throwing P2A00), done throttle relearn procedure and SES still comes on every 100-700 miles. Mods are below. I am at a loss for what it could be at this point.

06 6MT <40,000 miles as of this post
MD 5/16 spacer
MREV2
Z-tube
Berk HFC
HKS catback exhaust
Uprev Dyno Tune after all parts installed