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Is it possible for bad O2 sensors to cause random misfires?
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asked
Jul 16, 2018
by
Jason
Keep getting P0300, P0031, P0037, P0057 codes, have checked plugs and coils, intake gasket, and vacuum lines, all is good. Those 4 codes keep popping up together, I keep getting mixed answers as to whether its possible or not.
Vehicle:
2003, Lexus, ES 300, V6 3.0
p0300
p0031
p0037
p0057
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Jul 17, 2018
by
Reynaldo
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P0300 Random misfire
P0031Oxygen (A/F) Sensor heater control circuit low Bank 1 Sensor 1
P0051 Oxygen (A/F) Sensor heater control circuit low Bank 2 Sensor 1
P0031 H02S heater control circuit low Bank 1 Sensor 2
P0057 H02S heater control circuit low Bank 2 Sensor 2
No it will not if the 02 sensor was responsible for a P0300 you would set a MAF code there would have to be a exhaust leak right at the front or upstream 02 sensor, Check fuel pressure , Resolve for the P0300 such as fuel pressure, mechanical problem such as low compression, monitor for any coolant loss, This type of engine overheats easily.
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