2009 GL450 140,000 mile
CEL came on and changed O2 sensor 1 bank 1 with new Bosch O2 and it is Fluctuating between 1.005-1.035 volts and still setting off CEL. spec is 0.750 - 1.250 , so isn't 1.005-1.035 within spec ? Took to Benz dealer they recommend MB OEM part so did that and what happen is odd MB dealer with OEM part they ordered had no value at all. checked ecm to o2 checked wires and connectors all seem fine. all software is up to date,
truck has new MAF, filters and plugs .
only...
Fault 0559 G3/4 Fluctuating between 1.005-1.035 CEL
CEL came on and changed O2 sensor 1 bank 1 with new Bosch O2 and it is Fluctuating between 1.005-1.035 volts and still setting off CEL. spec is 0.750 - 1.250 , so isn't 1.005-1.035 within spec ? Took to Benz dealer they recommend MB OEM part so did that and what happen is odd MB dealer with OEM part they ordered had no value at all. checked ecm to o2 checked wires and connectors all seem fine. all software is up to date,
truck has new MAF, filters and plugs .
only...
Fault 0559 G3/4 Fluctuating between 1.005-1.035 CEL
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