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  #1  
Old 03-11-2009, 11:16 PM
apb apb is offline
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Unhappy Can bad MAF trigger O2 sensor codes?

I replaced all my o2 sensors and still get codes. Often, accompanied by P0100 code (MAF). This morning the car stumbled, I got P0100 at first then after a few minutes P0130 P0150 (sometimes I get the rear ones too P0136 and p0156). On the other hand, sometimes I get P0130 and P0150 and it takes a while before p0100 shows up.
I ordered a new MAF, do you think that will solve it?

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  #2  
Old 03-12-2009, 08:12 AM
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It is possible. Having a very rich OR most likely a very leam mixtire can keep the O2 sensors from tracing properly.
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  #3  
Old 03-12-2009, 08:24 AM
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Thanks! This has been puzzling to say the least... First the car was not running right but without CEL, but one of my catalytic converter had burnt. SO, I decided to replace all o2 sensors (160kmi... I know, lesson learnt). First I replaced the two rear sensors only and started getting fault codes for the front sensors - strange. I called Bosch and they said that can happen with old sensors not working together well. So, I replaced the front ones a few days later. The car runs much better but I continue to get codes, now often with P0100 as well.

So, I went from a car that was not running well without CEL, to one that is running much better with CEL. I can't wait to get my new MAF.
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  #4  
Old 03-12-2009, 11:45 AM
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Did you replace the cats?
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Old 03-12-2009, 08:06 PM
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yes. the left side.

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