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Originally Posted by sbourg
If you set the meter manually to a range where 12V is on-scale, e.g. 32 vdc f.s., you won't get 'OL'. What meter are you using? Note too that loop control via monitoring the O2 sensor does not occur until the O2 sensor warms up. Until then, your diagnostic reading may not be valid.
Steve
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gotcha. i'm using this mastercraft brand digital multimeter, a canadian brand which you may not heard about but its got the neat functions. i've set it at the wrong range which may be the reason why i'm getting the OL reading. cheers!