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Message: My first CEL

Changed By: obradley48
Change Date: May 02, 2021 07:17PM

My first CEL
I searched this forum and didn’t find the answer to my question so please forgive the posting of something that has been beat to death...

After hard acceleration my CEL came on when I got home the OBDii reader found a P1121 code. My reader doesn’t have Porsche listed so I used VW/Audi. Reader said “O2 sensor heater circ. Bank 2 Sensor 2 Short to ground” cleared the code and went for a short drive CEL did not come back on, but checked again and now the same code is pending.

After some research- it appears that a Porsche P1121 code refers to the TPS.

Can someone clarify this?

I do have a FabSpeed Supercup exhaust on the car- would that affect the O2 sensor reading?

1999 Boxster 2.5L

Original Message

Author: obradley48
Date: May 02, 2021 07:06PM

My first CEL
I searched this forum and didn’t find the answer to my question so please forgive the posting of something that has been beat to death...

After hard acceleration my CEL came on when I got home the OBDii reader found a P1121 code. My reader doesn’t have Porsche listed so I used VW/Audi. Reader said “O2 sensor heater circ. Bank 2 Sensor 2 Short to ground” cleared the code and went for a short drive CEL did not come back on, but checked again and now the same code is pending.

After some research- it appears that a Porsche P1121 code refers to the TPS.

Can someone clarify this?

I do have a FabSpeed Supercup exhaust on the car- would that affect the O2 sensor reading?