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Old 06-04-2011, 10:29 AM
adboles adboles is offline
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Location: Tennessee
 
Join Date: Mar 2011
Posts: 34
Mein Auto: 745i
1172 scorp, It might be the valves but I'm pretty sure they have a differnt code, not positive, but I would check for separate codes before going to the shop. I'm thinking about checking the air flow volume myself. Was your pump moving a lot of air, or just a little? I'm wodering if after 150,00 miles the pump weakens, like a bilge blower does on an older boat. I had both codes 0491 and 0492 until yesterday. Now I'm just getting 0491 which is passenger side, bank one. I've reset the light and counting the cold starts before it comes back on.
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