Omega Owners Forum

Omega Help Area => Omega Electrical and Audio Help => Topic started by: widing on 28 June 2010, 20:18:54

Title: Faulty lambda sensor? ECU codes 38 and 91
Post by: widing on 28 June 2010, 20:18:54

I have a 1996 Opel Omega. And got the fault codes:
38 and 91. Is my lambda sensor faulty?

Title: Re: Faulty lambda sensor? ECU codes 38 and 91
Post by: widing on 28 June 2010, 20:20:13

38 Oxygen sensor circuit - voltage high
91 Oxygen heating - voltage high

Title: Re: Faulty lambda sensor? ECU codes 38 and 91
Post by: RobG on 28 June 2010, 20:46:52

Before condemning the sensor I`d do a thorough inspection of the wiring first

Title: Re: Faulty lambda sensor? ECU codes 38 and 91
Post by: widing on 28 June 2010, 20:57:37

Quote

Before condemning the sensor I`d do a thorough inspection of the wiring first

I've check the connector and it loosk fine, what else should i check?

Title: Re: Faulty lambda sensor? ECU codes 38 and 91
Post by: Andy H on 28 June 2010, 22:09:55

I think the two 'high voltage' signals indicate an open circuit.

An open circuit could be caused by either faulty wiring or a faulty sensor.

If you have satisfied yourself that it isn't a wiring fault then it is probably time for a new lambda sensor.