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Lambda Sensor Data 1 month 6 days ago #196699

Hi all, just joined the forum and was wondering if any of you could help me understand some strange reading that I'm getting. Went for a drive with my Pscan plugged in recording the lambda sensor data on my MPI mini, was just looking at it and all seems ok bar these strange blips in voltage every couple of minutes. I've attached a photo to show you what I mean.

Is the sensor defective in some way? Can't really figure out why the voltage reading would be so high given the sensor is only meant to read about 1V at it's max. Any thoughts or advice would be much appreciated. Many thanks!

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Lambda Sensor Data 1 month 3 days ago #196719

Anyone?

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Lambda Sensor Data 1 month 2 days ago #196730

Hi and welcome to the forum

Sorry, it does look strange but I have no idea why.

James

Home to black MGZS180, yellow MGZS180, blue MGZR160, green MGF VVC and red MG Maestro T16.

MG - the friendly marque.

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Lambda Sensor Data 1 month 1 day ago #196746

There's another thread here https://www.the-t-bar.com/forum/pscan-uk-diagnostic-tool-forum/97624-pscan-diagnostic-tool in which someone said that a bad battery earth (in this case the captive nut to which the earth cable connects) caused failure of both ECU and lambda sensor. Maybe your live data glitches of 12V could be the same thing?

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