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VW Golf 1.4 FSi BKG 2005 - Code P3042 19498 Heater regulation - signal implausible - Fixed #

Posted by John Wilkinson on October 4, 2013, 6:12 pm

Year of Manufacture *: 2005
Engine Size and Code *: 1400 FSI BKG
( Optional ) Scanner Used: Bosch & Launch
( Optional) Fault Codes: P3042/19498

Hello

I'm looking for further information on fault code P3042/19498 Heater regulation - Signal implausible. Neither Autodata or RMI technical departments seem to be able to give any more details. The CO is high; 1.616 and Lambda low; 0.951, HC is normal at 4000 rpm, at idle the CO drops to 0.285. It looks like front lambda sensor from emissions but if any one has come across this any help would be great, thanks.

Re: VW Golf 1.4 FSi BKG 2005 - Code P3042 19498 Heater regulation - signal implausible #

Posted by Shane gray <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=ukat3442' width='330' height='300' border=0 style='border:none;'> on October 5, 2013, 4:59 pm, in reply to "VW Golf 1.4 FSi BKG 2005 - Code P3042 19498 Heater regulation - signal implausible #"

What's live data telling you ?
Can you scope the O2 ?
Shane

Fixed #

Posted by John Wilkinson on October 7, 2013, 10:13 am, in reply to "Re: VW Golf 1.4 FSi BKG 2005 - Code P3042 19498 Heater regulation - signal implausible #"
Edited by board administrator October 10, 2013, 4:04 pm

New front lambda sensor, emissions now ok.

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