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Old 01-24-2010, 05:39 PM   #1
Taz
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Thanks for the info I'll post the results
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Old 01-25-2010, 07:41 AM   #2
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i just had my AOS replaced and am still getting the 1128 and 1130 codes (mainly on cold days or when I get stopped at red light/stop sign for prolonged periods of time)

I don't think it's the AOS causing this, but most likely a vacuum or exhaust leak
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Old 01-27-2011, 03:11 PM   #3
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P1128 = Oxygen Sensing Adaptation, Idle Range, Bank 1 - Above Limit
P1130 = Oxygen Sensing Adaptation, Idle Range, Bank 2 - Above Limit

These errors can have many causes including:
  • Fouled MAF sensor
  • Exhaust Leaks
  • Intake Leaks
  • Low Fuel Pressure
  • Fouled Fuel Injectors

Because you're gettig them on both banks at the same time, deductive reasoning suggests we can eleminate those that would be more likely to create an error in only one bank, leaving us with:
  • Fouled MAF sensor
  • Intake Leaks
  • Low Fuel Pressure

You replaced the MAF, and a bad AOS could create an intake leak, so your are on the right track. If that doesn't solve it, a fuel pressure test would be in order.
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Old 06-13-2013, 08:40 AM   #4
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2 weeks ago I got a check engine light that came on. Plugged my OBD-II reader and it gave 2 codes:

P1128 = Oxygen Sensing Adaptation, Idle Range, Bank 1 - Above Limit
P1130 = Oxygen Sensing Adaptation, Idle Range, Bank 2 - Above Limit

Before I spent good money on a new MAF, I opened up my engine, replaced the air filter and found my MAF sensor, got a can of MAF cleaner, sprayed it in and out, put it back, reset my codes.
Has not come on since... fingers crossed but looks, runs very well!


Last edited by soucorp; 06-13-2013 at 08:45 AM.
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