Thread: MAF or O2?
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Old 07-19-2011, 01:09 PM   #9
Topless
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Join Date: Nov 2006
Location: Southern ID
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From Loren over on Renntech:

"P1128 Oxygen Sensing Adaptation, Idle Range, Bank 1 – Above Limit
P1130 Oxygen Sensing Adaptation, Idle Range, Bank 2 – Above Limit
Possible fault causes:
– Incorrect signal from MAF sensor
– Intake air system leaking
– Fuel pressure too low
– Volume supply of fuel pump too low
– Fuel injectors fouled
– Exhaust system leaking

Bottom Line - in most cases we are looking at an air leak or a bad MAF. If the MAF is bad then it is sending the wrong signal to the DME.

P0740 Torque converter clutch, excessive power consumption
This is a CAN bus reading that is sent to the instrument cluster. I've seen this often from wheel spin.
I would reset this one and see if it comes back under normal driving."

Disconnect the MAF and if the car runs better, clean or replace the MAF.
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Last edited by Topless; 07-19-2011 at 01:14 PM.
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