Check Engine Light issue

[fullthrottle52]

Hello to all,

Just purchased a 2000 boxster. After 2 weeks the check engine light came on. Had private porsche mechanic check the problem. He put a reader on it and it came back with undefined porsche code and the numbers p1130 and p1128. He said he would have to take it to the shop to completely diagnose the problem. Any ideas as to what would cause these codes to come up? Boxter Light Codes say this would be a Oxygen Sensing problem. Any ideas what needs to be replaced.
He reset it and said it would probably return after so many starts. It came back today after 2 more weeks and maybe 20 to 30 starts.
Any help would be appreciated.

Thanks,

[stateofidleness]

MAF Sensor.. save yourself the trouble and just replace it. It's about $230, but you'll have headaches from throwing other parts/ideas at it. Ask me how I know

[JFP in PA]

Originally Posted by stateofidleness

MAF Sensor.. save yourself the trouble and just replace it. It's about $230, but you'll have headaches from throwing other parts/ideas at it. Ask me how I know

I find that interesting as the P1128 and 1130 codes are an indication that the car has a problem keeping the system rich enough to maintain the A/F ratio; typically caused by either an intake system air leak or low fuel pressures......and nothing in the diagnostic tree even mentions testing or replacing the MAF……….

[Johnny Danger]

Originally Posted by JFP in PA

I find that interesting as the P1128 and 1130 codes are an indication that the car has a problem keeping the system rich enough to maintain the A/F ratio; typically caused by either an intake system air leak or low fuel pressures......and nothing in the diagnostic tree even mentions testing or replacing the MAF……….

My thoughts exactly . That's why I posted the codes . I can't imagine this has anything to do with the MAF sensor ??

[JFP in PA]

Originally Posted by Johnny Danger

My thoughts exactly . That's why I posted the codes . I can't imagine this has anything to do with the MAF sensor ??

In general, it does not have anything to do with the MAF; MAF codes are P0101, 0102, and 0103, depending on what the problem is.............

[JFP in PA]

Just for chuckles, over on RennTech, someone took out his MAF for cleaning, and forgot to reinstall it before driving off to work leaving the MAF sitting at home on the bench, apparently without any codes or problems. Now he wants to know if he needs to have it towed home or if he has done any permanent damage………….

[Johnny Danger]

Originally Posted by fullthrottle52

Hello to all,

Just purchased a 2000 boxster. After 2 weeks the check engine light came on. Had private porsche mechanic check the problem. He put a reader on it and it came back with undefined porsche code and the numbers p1130 and p1128. He said he would have to take it to the shop to completely diagnose the problem. Any ideas as to what would cause these codes to come up? Boxter Light Codes say this would be a Oxygen Sensing problem. Any ideas what needs to be replaced.
He reset it and said it would probably return after so many starts. It came back today after 2 more weeks and maybe 20 to 30 starts.
Any help would be appreciated.

Thanks,

http://www.iwantaporsche.net/BoxsterCheckEngineLightCodes.htm

[Johnny Danger]

P1128 Oxygen Sensing Adaptation Area 2 (Cylinders 1 - 3) - Rich Threshold

P1130 Oxygen Sensing Adaptation Area 2 (Cylinders 4 - 6) - Rich Threshold

[fullthrottle52]

Is this MAF something I can purchase and replace myself or does it need to go to a mechanic or dealer.
I have heard this is a common part that slowly goes bad.

[Jager]

You can do it yourself but you will need a Torx T 20 anti-tamper bit/driver to remove the sensor. You will also have to get to the top of the motor by opening the convertible top half way, remove the carpet, then remove the motor cover. See photo below on what one of the Torx anti-tamper bits looks like.

[Johnny Danger]

I just changed my MAF sensor a couple of days ago . Here's the interesting thing, every DIY article refers to a T-20 torx as the correct size bit, when in fact it was a T-10 that fit the torx bolts on my vehicle . So, before anyone runs out the hardware or auto parts store to buy a single bit, make sure what size torx you have . Or, buy a set like the one Jager is showing .