tennis

There are quite a few threads about this subject if you spend a few minutes with the search feature of this site.

But in a nutshell I believe you just need to replace the sensor in the seatbelt clip and you are good to go (there are write ups on this IIRC

Let us know how it goes

Thank you.....I'll check out what has already been written on this issue...

Recently, I suddenly had difficulty getting my seatbelt to lock---it seemed as if the locking mechanism was jammed. My mechanic advised me that it needed to be replaced....I decided to wait before spending $ 275 quoted for the replacement.

Even though the seatbelt would not lock, the 'pinging' sound and light on the dashboard were still working. After about a week, the jamming released itself and now the seatbelt locks very easily and stays locked. The only problem I now have is that the seatbelt warning light and 'pinging sound' are intermittent. How can I know that the airbag release will work correctly if there were an accident as I understand that the seatbelt and airbag are connected?

Any help would be much appreciated.

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

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.

I have 1999 Boxster and recently had 3 CEL fault codes---mechanic replaced oil separator and cleared the codes. A few days later, I got three more codes p1602/p1123/p1125. I got those cleared again but decided to wait and see if they returned a third time...sure enough, they did a minute after putting the car in park to pick up my mail.

My mechanic says the codes could have many problem sources.

Can anyone please educate me on this annoying issue...was the replacement of the oil separator on its own the correct 'fix' or should something else also be replaced to prevent these codes from coming on? The car is running perfectly well otherwise. It only has 56,000 miles.

Is there an online list of these codes to be accessed?

Any help will be much appreciated.

First off I'd find another mechanic.

That being said code P1602 is a voltage supply code and is probably what caused him to replace the battery but that code doesn't mean the battery is bad it just means there is low voltage triggering a code and the low voltage could be happening in the system not the battery.

P1123 and P1125 are oxygen sensing problems in the cylinders causing the ECU to sense a lean mixture threshold. None of these codes are a reason to change the AOS. If the AOS goes bad it is accompanied by smoke continuously coming out of your tail pipe. Lots of smoke.

Porsche codes are both good and bad. They are good because they tell you that a problem has come up in your car and/or that a problem is imminent. The codes are bad because they do not point to a specific part but to a system i.e. the emissions system which is the most common system in the car that will cause codes because the ECM is constantly adjusting air fuel mixture according to octane, air intake, altitude, what the O2 sensors sniff from the first set to the second set and etc. If something changes in the system, for instance a vacuum leak in the secondary air system, another common emissions code and CEL puller, you will get codes that indicate you have a problem in the system. It is why Porsche has developed a diagnostic "tree" to follow to narrow down the specific part{s} that have failed or will be failing. Shotgun mechanics either don't know the tree or get lazy and don't want to diagnose it so they start replacing parts hoping they get the right one. Problem is you pay for it in, sometimes, needless part replacement and returning codes.

Find a mechanic who knows the diagnostic tree and knows how to use it you will save yourself a lot of grief.

Thank you so much for taking the time to give me such a detailed response....I will certainly find a new mechanic, although this one specializes in German cars.....I guess that doesn't really seem to count for much.

I did not have any smoke problem from the tail pipe prior to the AOS replacement...I am sure of that.

P1602 occured after battery was replaced.....that is even weirder.

I will get this third set of codes read and see if there is any change from last two readouts and take it from there.

I will post the outcome!

Thanks again!

The mixture codes may simply be "ghost" codes caused by a lack of adaption values in the DME. I would clear the codes using something like the Durametric, or any OBDII scanner, and drive the car for a bit before doing anything else. The mixture codes may come back again, so be prepeared for one more "reset" before taking them seriously.

Thanks for your helpful input...I will do that and hope fully that will be the end of them!!! :clapping:

What caused your mechanic to replace the AOS? Was there a code indicating it had failed and or were you getting smoke from the tail pipe?

The first codes were related to o2 sensors in all four cylinders...'lean limit' readings...he replaced AOS and ran a smoke test,found a separate leak which he maintains he also repaired.

What I do not understand is why these codes are still reading out even after this repair...what do they actually mean?

Let me guess: your mechanic cleared the codes by disconnecting the battery.......

P1602 is the code for memory loss of the DME adaption values. Usual suspects: Wiring issues at terminal 30, battery was disconnected, DME was unplugged.

P1123 and 1125 are the codes for both banks being so rich that the DME cannot compensate. Usually this is caused by high fuel pressure or leaking injectors; but as it seems to have happened just after the AOS was changed out, it may just be the lack of adaptation values (running time) on the DME.

If your mechanic did clear the codes by using the battery, first you need a new mechanic. That is not how you clear codes. Take the car to a shop with either a Durametric system or a PST II/PIWIS unit, re-read the codes and then have them cleared. If there really is a fuel issue, the 1123/25 codes will return without the 1602 code after the DME has relearned the adaptation values, which will require you to drive the car for a bit.

You are absolutely correct...the mechanic told me he had to replace my battery after the repair, even though the one I had was only a few months old... why would that have been necessary...would they have somehow just drained it.. so would account for the DME issue.I will have the codes reread as you suggest.What do 1123/25 indicate and how do you finally get rid of them? What is O2 sensor connection as indicated on the printout? Is it damaging to the engine to drive the car in the meantime?

I should say that the mechanic originally ran a smoke test and found another leak after AOS was replaced.

The second clearing of the codes was not done via battery, as I did not have to reset my radio code that time.

The codes were printed from Durametric software as I have the printout.

The initial testing, AOS replacement cost me $725 including oil and filter change--5 hours of labor was charged.

I have 1999 Boxster and recently had 3 CEL fault codes---mechanic replaced oil separator and cleared the codes. A few days later, I got three more codes p1602/p1123/p1125. I got those cleared again but decided to wait and see if they returned a third time...sure enough, they did a minute after putting the car in park to pick up my mail.

My mechanic says the codes could have many problem sources.

Can anyone please educate me on this annoying issue...was the replacement of the oil separator on its own the correct 'fix' or should something else also be replaced to prevent these codes from coming on? The car is running perfectly well otherwise. It only has 56,000 miles.

Is there an online list of these codes to be accessed?

Any help will be much appreciated.

I have 1999 Boxster and recently had 3 CEL fault codes---mechanic replaced oil separator and cleared the codes. A few days later, I got three more codes p1602/p1123/p1125. I got those cleared again but decided to wait and see if they returned a third time...sure enough, they did a minute after putting the car in park to pick up my mail.

My mechanic says the codes could have many problem sources.

Can anyone please educate me on this annoying issue...was the replacement of the oil separator on its own the correct 'fix' or should something else also be replaced to prevent these codes from coming on? The car is running perfectly well otherwise. It only has 56,000 miles.

Is there an online list of these codes to be accessed?

Any help will be much appreciated.

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 :(