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Update on CEL codes 1123/1125

tennis

By tennis
in 986 Series (Boxster, Boxster S)

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tennis Member

tennis

Posted
Posted

This is an update to my previous postings about CEL codes 1602/1123/1125.

I did as advised by responding members ( thank you) and drove the car a lot...CEL light came on again as expected... read out this time showed only 1123/1125, so DME must have adapted again after battery was replaced but not enough to eliminate 1123/1125. Mechanic idicated that MAF reading this time was within the normal range...15,I believe....

I assume the only way to really get a correct diagnosis of this ongoing lean fuel issue is to have access to Porsche diagnostic tree......which my current mechanic does not have. Is a certified Porsche dealer the only source or could I expect another Porsche/German car 'expert' to have access?

Is it possible that some brands of 93 octane gasoline could have more additives and cause this problem. I currently use Shell but wonder if Texaco or another brand is of better quality.

Your suggestions will be most welcome.

Thank you.

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Loren Member

Loren

Posted
  • Admin
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P1123 Oxygen Sensing Adaptation Area 1 (Cylinders 1 . 3) - Lean Threshold

P1125 Oxygen Sensing Adaptation Area 1 (Cylinders 4 • 6) - Lean Threshold

- Fuel pressure too high.

- Fuel injector leaking.

- EVAP canister purge valve open.

In most case I have seen the purge valve is the problem.

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tennis Member

tennis

Posted
  • Author
Posted

P1123 Oxygen Sensing Adaptation Area 1 (Cylinders 1 . 3) - Lean Threshold

P1125 Oxygen Sensing Adaptation Area 1 (Cylinders 4 • 6) - Lean Threshold

- Fuel pressure too high.

- Fuel injector leaking.

- EVAP canister purge valve open.

In most case I have seen the purge valve is the problem.

Loren

Just wondering where my post was moved to so I can locate it.

Thanks

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Loren Member

Loren

Posted
  • Admin
Posted

P1123 Oxygen Sensing Adaptation Area 1 (Cylinders 1 . 3) - Lean Threshold

P1125 Oxygen Sensing Adaptation Area 1 (Cylinders 4 • 6) - Lean Threshold

- Fuel pressure too high.

- Fuel injector leaking.

- EVAP canister purge valve open.

In most case I have seen the purge valve is the problem.

Loren

Just wondering where my post was moved to so I can locate it.

Thanks

You can always use My Content from your Login Name at the upper right.

http://www.renntech....ivity&mid=72328

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