[Biturbos4] HELP!!! Troubleshooting DTCs w/ EPC light

[Ti Kan]

Seems more like a wiring connector/contact problem or something.
I think it's unlikely that the oxygen sensor's heating element
would go open circuit at the same time as the sensor element itself.
The EGT sensor short to ground fault is intermittent.  Maybe it's
also a wiring related issue.

The system too lean messages are probably just by-products of
not getting a proper oxygen sensor reading.

The throttle actuator message also says that it's intermittent.
I would clear the DTC (after fixing the other problems) and
see if it recurs.

-Ti
-- 
Ti Kan
http://www.amb.org/ti
Vorsprung durch Technik


Adam Jansen writes:
> As I was driving over the Cascades to visit family for the holiday, the EPC 
> light comes on the the power cuts out (not fun coming up Snoqualmie Pass!)
> 
> I dont have my Bently or family albumn with me, but luckily I did have the 
> laptop and pulled these codes:
> 
> 17526 - Oxygen (Lambda) Sensor Heating: B1 S2: Open Circuit
>             P1118 - 35-00 - -
> 17522 - Oxygen (Lambda) Sensor: B1 S2: Internal Resistance too High
>             P1114 - 35-00 - -
> 16524 - Oxygen (Lambda) Sensor B1 S2: No Activity
>             P0140 - 35-00 - -
> 17866 - Exhaust Gas Temp Sensor 2 (G236): Short to Ground
>             P1458 - 35-10 - - - Intermittent
> 17536 - Fuel Trim: Bank 1 (Mult): System too Lean
>             P1128 - 35-00 - -
> 17538 - Fuel Trim: Bank 2 (Mult): System too Lean
>             P1130 - 35-00 - -
> 17579 - Angle Sensor 2 for Throttle Actuator (G188) Implausible Signal
>             P1171 - 35-10 - - - Intermittent
> 
> I am replacing the O2 sensor in the morning (driver's side rear correct?) 
> but I am worried about the Throttle Actuator and the System running lean!
> 
> I stopped when the light came on and then started off again as the light 
> turned off... it seems that the EPC light with the above codes (expect the 
> O2 sensors readings) come on only after the engine has been running on the 
> highway for 30-45 mins, which just adds to the frustration of trying to fix 
> it!
> 
> ANY help would be appreciated!
> 
> Thanks
> Adam
> 00 S4
> Spokane, WA but current stuck in Olympia and hesitant to crawl over the 
> cascades under limited power