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Old 13th June 2013, 21:01
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MadDogMoggy MadDogMoggy is offline
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I had another quick play yesterday evening.

The switched live that feeds the heater had blown its fuse, so the heater wasn't working. Replaced it with a larger one (went from 10A to 15A). This stopped the O2 heater error!

Voltage of the sensor (bizarrely) is back to fluctuating between 0.01v and 0.23v. Not sure why it was reading 0.2 to 0.5 at the weekend.

Riachard - any reason why the relay didn't work? I was thinking of using the original switched live to operate the relay (earthed directly, not through the ECU) and then have a direct feed from the battery through the switched part of the relay to the heater, again earthed to a suitable earth point.

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