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Model specific boards => Golf mk4 => Topic started by: Cacwn Tew on 17 March 2010, 16:56

Title: 17521 - Oxygen (Lambda) Sensor
Post by: Cacwn Tew on 17 March 2010, 16:56

Dear All

I have had a look on the forum for the above fault without much results.
Are we looking at a sensor which one, or is the actual cat itself on its way out?
Could it be as simple as a poor connection as I have had a SS exhaust fitted last month.


1 Fault Found:
17521 - Oxygen (Lambda) Sensor: B1 S1: Internal Resistance too High       
 P1113 - 35-10 - - - Intermittent

thanks! :smiley:

Title: Re: 17521 - Oxygen (Lambda) Sensor
Post by: snap-on on 17 March 2010, 20:22

Sounds like front 02 sensor fault (one before cat) . can you see it switching on live data on scanner ? should be showing mv going up and down like a yo yo .

Title: Re: 17521 - Oxygen (Lambda) Sensor
Post by: Cacwn Tew on 17 March 2010, 20:27

Quote from: snap-on on 17 March 2010, 20:22

Sounds like front 02 sensor fault (one before cat) . can you see it switching on live data on scanner ? should be showing mv going up and down like a yo yo .

Lost me now, not that hot on the vag, can scan and clear thats about it.

thanks

Title: Re: 17521 - Oxygen (Lambda) Sensor
Post by: snap-on on 17 March 2010, 20:31

does vag com not show live data of sensors etc working ? or is it just a code reader

Title: Re: 17521 - Oxygen (Lambda) Sensor
Post by: topher on 17 March 2010, 20:39

01 engine - Measuring blocks

o2 related channels are 030 - 049