Error Code & Cleaning MAF ??'s

[tsweat]

Hello All...

I have searched and read all questions and responses regarding error codes from check engine light notices. All provided insight, but I am still confused on what plan of attack MY SITUATION calls for...

First off, I posted a note many months ago when the first CEL came on, inquiring about a dirty air filter and if that could be the culprit. The light went away, so I figured no harm (filter seemed as though it had some more miles left).

Fast forward to now, and the CEL has been flickering on-&-off for about the last month, (I don't drive it that much). So this weekend, I checked the code (and cleared). I am receiving error code P1125 (Scan tool read out 'Fuel Air Metering Control'), Loren's list reads this code as (Oxygen Sensing Adaptation Cylinders 4-6). This is the only error code listed from the scanner.

First Question: Cleaning the MAF Sensor seems fairly straightforward, is there any way that, if careful, cleaning can cause damage to an otherwise healthy sensor?

Second Question: Could it in fact be my first guess months ago of a dirty air filter that needs to be replaced? I will be replacing filter tomorrow regardless.

Third Question: Code is cleared, but will disconnecting the battery for 20 minutes "reset" the computer calibration for fuel/air mixture in case cleaning of the MAF and new air filter rectify the situation?

Thanks in Advance!!!!

-Tim

[tsweat]

UPDATE

It has been 700 miles (took a road trip to Austin) since I cleaned the MAF and replaced the air filter. So far, so good -- no Check Engine Light and no funny business.

Hopefully this was the culprit (knock on wood).

If anybody has questions about the process, or what I did, let me know. It was all fairly straightforward.

-Tim

Edited July 7, 2005 by tsweat

[1999Porsche911]

Glad it worked out for you. And, yes, a dirty air filter can cause a rich condition that may set a P1125 code, as can a dirty MAF. Disconnecting the battery is a good idea at times and does not do any damage and will reset all learned parameters in the computer. I do this often after working on various sensors of the car. There have been times that even when a sensor is changed or modified, the computer will not adjust properly even after several days of driving. A quick battery disconnect does the trick immediately.

Also....the battery only has to be disconnected for less than 2 minutes to reset computer.

Edited July 7, 2005 by 1999Porsche911