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Pesky CEL codes

tennis

By tennis
in 986 Series (Boxster, Boxster S)

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tennis Member

tennis

Posted
Posted

On my 1999 Boxster, I recently had the oil separator replaced on the advice of my mechanic to correct CEL light/ 2 o2 Sensor codes.

Unfortunately, within a week of driving, I had CEL lights on again. This time, Durametric software printed out the following codes:

p1602 power supply, open circuit, Factory fault code 108

p1123 Oxygen sensing cylinders 1-3, lean limit Factory fault code 27

p1125 Oxygen sensing cylinders 4-6, lean limit Factory fault code 35

The mechanic turned them off but had no explanation for their return. That was on Wednesday.

Just today (Saturday), CEL came on again when I left the car running for 1-2 mins to take my mail from my mailbox.

Can anyone please explain why I am seeing these codes after $790 repair.... replacing the oil separator, plus an oil and air filter change done?

Have I been duped by my mechanic (who services only German cars)or do I need to go to Porsche dealer for the proper 'fix'?

What is my next step? Car only has 55,000 miles and has, until this happened, been terrific.

Your help and advice will be much appreciated!

Female driver who justs loves my Boxster :(

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Loren Member

Loren

Posted
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Posted

:welcome:

P1602 will happen anytime you disconnect the battery. Just clear this one.

Did you mechanic clean the oil out of the throttle body after the AOS repair?

You either have an air leak (still) or perhaps an EVAP canister purge valve stuck open.

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