Hey guys been a while, and I guess that means its that time again when I need your guys experteese.

So got a few nasty gremlins popping up all over the place and I am not sure what the hell is the real problem.

Long story short, was driving on a 1200KM journey and was doing around 120/140mph (legal where I am) and then noticed the speedo just start to drop and the car loose power it then hovered around 80/90. I gave the car a rest and waited about 30 mins to cool down, and then all seemed well and I was off.

Shortly after the check engine light came on saying check emssions etc. figured my o2 sensor has been a problem for a while so continued.

Was out of town for around 2 weeks no problems per say besides the check engine light been on. decided to buy a diagnostic bluetooth dongle and see whats really going on.

And I am getting lots of random stuff and just wanted to know if this is really down to the o2 sensor or not.

Basically I am getting alot of hesitation and sometimes idling up and down and then its stabalizes. There is also some misfiring but having changed the plugs not so long ago, im inclinded to think they have gone out again.

The codes are as follows:

P2626-POWERTRAIN O2 SENSOR PUMPING CURRENT TRIM CIRCUIT OPEN BANK 1 SENSOR 1.

P2096 POWERTRAIN POST CATALYST TRIM SYSTEM TOO LEAN BANK

on the live data stream I am getting the following errors.

O2 BANK 1 SENSOR 1 MIN -0.05 MAX 0.05 CURRENT -0.055

FUEL SYSTEM MONITOR BANK 1 MIN 1,028.8 MAX -2,457.6 CURRENT 1,049.6

FUEL STATUS CLOSED LOOP 1 O2 SENSOR FAULT


on cylinder misfire this is the data I am getting.

EWMA MISFIRE COUNTS AVERAGE FOR LAST 10 DRIVE
CYLINDER 1 2 COUNT#
CYLINDER 2 1 COUNT
CYLINDER 3 2 COUNT
CYLINDER 4 5 COUNT

It seems cylinder 4 has been having the most misfires, I tried switching the coil packs around so the other misfires could have been recorded whilst I was switching them around, but 4 had the most prior to the switch.

So judging from this data is the o2 sensor bank 1 totally gone?these are the readings from bank 2

MIN 0 MAX 0.743V
CURRENT 0.733V

The bank 2 o2 sensor was replaced but was one bought off ebay so I am hoping this isnt what caused the other problems, when I did install it it did clear the check engine light from the previous o2 sensor that had broken.

Love to hear your guys feedback and any screen shots or stuff you need taken dont hestitate to request/

PS I forgot to mention that today it refused to start as well, it cranks and the fuel rail pressure seemed normal but it just refused and just kept turning but not starting. its happened twice, could it be the HPFP?