mbletsas

I am located in Massachusetts and I do have 2 sets of O2 sensors. M.

I just read my codes after the latest run and noticed that after the P1126, the car also threw a P0446 (Porsche fault code 95 - Shutoff valve activated - charcoal filter). To the best of my knowledge no mods have been done to the car. When I cleaned my MAF sensor, I also cleaned the throttle body and checked the intake for leaks (nothing visibly wrong). I assume the idle control valve is the Bosch part attched to the throttle body (on the left side when looking from the rear of the car). Anything tricky in detaching it and cleaning it? The oil filler cap doesn't seem to leak also, when removed with the engine idling you can hear vacuum (and feel sucking if you cap it with your hand). Is that normal? Thanks for all the suggestions, M

Correct, didn't notice that I was reading Oxygen Sensing. The Durametric tool doesn't give me the post-cat O2 sensor voltages. Depending on the run, I have recorded pre-cat O2 sensor voltages that range from -0.17V (???) to 0.82V (car warm) and 0V to 0.89V (car cold) Oxygen sensing value in the same conditions varried from 0.93 to 1.1 (car warm) and 0.94 to 1.2 (car cold) M.

I have cleaned the MAF sensor and its connector. I run another data log session and recorded values ranging from 18Kg/h (800rpm) to 305Kg/h (4000rpm) What doesn't make sense is the reading for the post-catalytic converter 02 sensors which is always around 1V The car eventually lights the CEL with a P1126 (oxygen sensing adaptation) error. M

Thanks! Do you by any chance know what the nominal voltage reading values of the O2 sensors are? M.

I have a '99 996 C2 Cabrio with 114K miles on it. The check engine light has been on despite my mechanic's repeated efforts (since the previous owner of the car). I have bought a Durametric diagnostic kit and the car consistently produces the following error codes a few minutes after start: moduleType = MotronicDME78 DTC Count = 6 Fault Number:P0151 Description:Porsche fault code 18 - O2 sensor ahead of cat. conv. Repair Infomation:bank 2 DTC Count = 6 Fault Number:P0131 Description:Porsche fault code 10 - O2 sensor ahead of cat. conv. Repair Infomation:bank 1 DTC Count = 6 Fault Number:P0137 Description:Porsche fault code 12 - O2 sensor behind cat. conv. Repair Infomation:bank 1 DTC Count = 6 Fault Number:P0157 Description:Porsche fault code 20 - O2 sensor behind cat. conv. Repair Infomation:bank 2 I.e. all 4 oxygen sensors report failure in the same manner (Short to ground/below lower limit/lean mixture threshold). I read in the forums that when this happens, it is usually a problem with the MAF sensor. I checked the intake, cleaned the MAF sensor as described elsewhere in the forums, however the errors keep coming back. The MAF seems to be working fine. I took a 15 minute drive with the laptop attached and the MAF values varried from 12 kg/h to 150 closely tracking RPM. The O2 sensor output on the other hand doesn't seem right. Both the pre-catalytic converter ones seem to randomly read between -0.2 and +0.7 volts while the post-catalytic converter ones seem to be stuck around 1 Volt. Any ideas about what to try? Thanks, Michail

Try 3601 or 3599 If you have not already read this FAQ - please do so... Lost Radio Code - FAQ, PLEASE READ THIS FIRST Unfortunately it didn't work :-( M. Please read the FAQ. 3602 worked! So it seems that the FAQ needs to be augmented with the info that the code from the 4 digit Becker calculator +1 should also be tried. Best, M

Try 3601 or 3599 If you have not already read this FAQ - please do so... Lost Radio Code - FAQ, PLEASE READ THIS FIRST Unfortunately it didn't work :-( M.

Hi, The battery of my '99 C2 Cabrio got disconnected and I realized the the car radio card that I was given doesn't match my radio. It is a CDR-220 BECKER-1 Type 4462 S/N Y5048932 24/99 Grateful if you could calculate a code for me! Thanks, Michail