Engine faults

[Flat6speed]

P1117

Porsche fault code 14 - Heating power O2S behind cat. c. bank 1

P0430

Porsche fault code 45 - Cat conversion bank 2

exceeds limit value

 

Any ideas what is causing this?  2000 base stick shift.  107K miles.

 

Regards,

Scott

[Ahsai]

See diagnostic steps for P1117 here http://www.renntech.org/forums/topic/19325-p1117-and-p1121-on-new-o2-sensors/

 

P0430 most likely means the cat on bank 2 is out. There are also other causes like air leak in the exhaust. You can read the signals from all 4 sensors in real-time and positively id it's indeed the cat (and not something else). If the post-cat sensor signal swings similar to the pre-cat one, the cat is not functional.

[Flat6speed]

Thanks for the fast reply!

[EleCTriCT]

the o2's have 4 wires, the heater circut is the 2 white wires. you can verify the vehicle side has voltage and verify the o2 sensor has resistace on the heater circut. 

 

cat efficiency fault is often the cat itself.

 

hope this helps