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#1
02-22-2005, 11:01 AM
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multiple ECU codes
About 4 months ago, my 95 Altima's check engine light came on. The codes turned out to be O2 sensor bank 1 sensor 1 and Knock sensor. So I changed the O2 sensor before the cat. The check engine light remained off untill a few weeks ago. This time I got multiple codes;
0136 O2 sensor bank1 sensor 2 0325 knock sensor 0130 O2 sensor bank1 sensor 1 0400 EGR flow malfunction I really don't know if these codes are correct? I just changed the front O2 sensor, how come it reports there's a problem with it again? I already checked the tubes that comes out of the EGR valve and it looks fine, no cracks, no blockages. What really goes wrong with my car?  Thanks for sharing your knowledge! 
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#2
02-23-2005, 08:07 AM
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Re: multiple ECU codes
Disconnect the batter for 15 minutes both terminals and drive for a while and see if it comes back. If it does then you may have a problem but you might just have bad gas for now.
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