Mil Light

[julesk_1972]

O2 sensor for sure.

[Bizkets is Drunk?]

mine has come on this morning. it's been tuned and only after WOT it came on again. wired thing was the cruises control was having a brain fart after that to for a bit to but fine now. light is still on though.?

[crazyxa]

I have had the same issue with my G6ET 2010 model for a year now with battery resets doing the trick 3 times.

Glovebox manual says it is emissions so was not too stressed.

Now issue is coming back every 100km so have got off my arse and purchased an eBay Bluetooth ELM327 and downloaded FORScan app.

What came up:

===DTC P0133-C===

Code: P0133 - HO2S-11 circuit slow response

Status:

- Confirmed - malfunction is confirmed

Module: On Board Diagnostic II

Diagnostic Trouble Code details

HO2S has been switching too slowly.

This DTC may be caused by :

Aged or Contaminated HO2S11.

===END DTC P0133-C===

Above points to pre cat front O2 sensor.

For good measure I cleaned both pre and post car O2 sensors with carby / throttle body cleaner. Also re torqued / tightened both exhaust and inlet manifolds while there. And for final good measure sprayed throttle body cleaner into the throttle body.

Have now reset the DTC above, allot easier now with FORScan.

If it comes back a replacement Bosch O2 sensor is going in.