Bobby Saulino Posted January 25, 2019 Share Posted January 25, 2019 Engine warning light error message P0030 has any else had problem and is it oxygen sensor? Thanks Bobby S Quote Link to comment Share on other sites More sharing options...
stef123 Posted January 25, 2019 Share Posted January 25, 2019 You need to prove power and ground at the sensor connector and also the heater circuit of the sensor. Quote Link to comment Share on other sites More sharing options...
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