Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: MV6Man on 07 October 2010, 16:25:14

Title: fault codes 57,71 and 131
Post by: MV6Man on 07 October 2010, 16:25:14

Bought an omega few days ago.
It's a 2.5 petrol -00.  If i take ground wire off from battery and start car after that, em light don't appear before i give some revs.. Idle is a bit low approx 500rpm.

Any ideas where to start?
Codes taken with paperclip...

Title: Re: fault codes 57,71 and 131
Post by: Welung666 on 07 October 2010, 16:44:12

57   Idle Air Control Voltage Low
71   Intake Air Temperature Voltage High
131   Exhaust Gas Recirculation (EGR) Valve Feedback Voltage High

Forget taking the battery lead off as it won't reset the codes. Clean the IACV (front corner of the plenum) and clean the EGR (back of the 246 bank).

Title: Re: fault codes 57,71 and 131
Post by: MV6Man on 15 October 2010, 19:50:38

Problem solved, knock sensor wiring was causing this...