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mike8080
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I've got a '98 Boxster with the manual 5 speed transmission. It recently failed an emissions test due to CEL being on and fault code P1123. Based on the advise in another post in this forum, I removed and cleaned the MAF sensor. I used my Durametric cable to clear the codes and took it for a 30 minute test drive. After that, I used the Durametric Short Test and am still getting P1123 as well as P1125 and P0150. After more searching, I found posts that suggested a vacuum leak. I don't have a smoke tester, but with the car idling, I unscrewed the oil filler cap and the engine changed RPM's. I also tested by loosening a host that goes to the air-oil separator and the RPM's changed again. My understanding is that indicates a vacuum leak is less likely. More searching and I found Mike Focke's post here: https://sites.google.com/site/mikefocke2/oxygensensors Using the Durametric software, I took the following measurements: 02 sensor voltages ahead of cat. c. bank 2 oscillates between approx 0.1 V and 0.8 V 02 sensor voltages ahead of cat. conv. oscillates between approx 0.05 and 0.75 period seems a little shorter than the other sensor Oxygen sensing cylinders 4-6 steady between about 1.0V and 1.06V Oxygen sensing cylinders 1-3 steady between about 0.95V and 1.0V Based on my understanding of Focke's post, the O2 sensors ahead of the cats are reading okay (although I don't know about the frequency of oscillation... could they be "tired"?. Also based on Focke's post, the last two Oxygen sensor measures look suspicious. They are supposed to be reading a voltage close to 0V, but are reading voltages close to 1V. In Focke's post, these sensors may oscillate if the cat is not working correctly. So, what does a steady high reading indicate? Maybe I'm not looking at the correct measures in the Durametric software? Any idea what's wrong? TIA, Mike
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Lost Radio Code - post your request here
mike8080 replied to pennyporsche's topic in Lost Radio Codes
Try 7159 Worked like a charm. Thank you so much! :) -
Lost Radio Code - post your request here
mike8080 replied to pennyporsche's topic in Lost Radio Codes
Hi, Need a radio code after changing my battery. CDR-220 Type 4362 and Serial Number 25007456. Thanks in advance for your help. Mike