ROUGH IDLE

[Danny Hammoud]

 Unfortunately, I am back with another problem or problems........

A couple of days ago a check engine light popped up on my 997.2s and because it is my daily driver, I was not able to immediately diagnose the issue. I went ahead and ordered a "Carsoft POR II" scanner off amazon as i thought it would help my understanding in what the problem was. (Getting to the point.....)   Today while I was driving home from class, the car was running very rough. I decided to pull over and give the scanner a go...

DME CODES;

P0660 INTAKE PIPE SWITCHOVER FINAL STAGE

P0153 02 SENSOR AHEAD OF CAT BANK 2 DYNAMISM 

P2099 A/F  RATIO CORRECT. BEH. CAT. BANK 2 ABOVE RICH CONTROL UNIT

P2198 02 SENSOR AHEAD OF CAT. BANK 2 TOO RICH SIGNAL

P0174 BANK 2 TOO LEAN

P0171 SYSTEM TOO LEAN

P2196 02 SENSOR SIGNAL BIASED/ STUCK BANK 1 SENSOR 1

 

Being the person I am, I went ahead and cleared the codes dreaming my problems would magically go away. ?

About 10 minutes into my commute the codes again popped up but this time, there was something a bit different.......

 

THE NEW CODES INCLUDED;

P0174 SYSTEM TOO LEAN BANK 2

P0171 SYSTEM TOO LEAN BANK 1

P0306 MISFIRE CYLINDER 6

P0305 MISFIRE CYLINDER 5 

P0304 MISFIRE CYLINDER 4

P0300 MISFIRE - TOTAL ERROR

P0660 INTAKE PIPE SWITCHOVER FINAL STAGE

 

About 2 months ago I installed a new O2 sensor bank 1 sensor. While at it, I had a new AOS installed as well (OEM parts). There are some theories I have in mind but as for now, I am truly stumped on this issue. Does anyone have any experience with this madness?! Thanks for reading! ?

 

This morning I started my car again and a puff of white smoke shot out of the tail pipes. The smoke did clear up really quick. 

 

MORE NEW CODES;

P2A04 O2 SENSOR CIRCUT RANGE/ PERFORMANCE BANK 2 SENSOR 2

P2099 POST CATALYST FUEL TRIM SYSTEM TOO RICH BANK 2

P0153 O2 SENSOR CIRCUIT SLOW RESPONSE BANK 2 SENSOR 1

P2198 O2 SENSOR SIGNAL BIASED/ STUCK RICH BANK 2 SENSOR 1

P0171 SYSTEM TOO LEAN BANK 1

 

Edited September 26, 2018 by Danny Hammoud
MISSING INFORMATION