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Re: Honda code 43
MAP sensor (center wire is signal wire, usually white) at
idle should be .95 volts (0.3 % C0) at 19.5 to 20.0” of HG
At 1.10 volts back to ECU the CO is 6.0%. At 1.30 volts to
ECU the CO is 9.0% KOEO Map should read 2.75 volts (sea
level). 
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