brimcc Posted July 5, 2010 Share Posted July 5, 2010 Hi, I have code PO356, "Ignition Coil F, Primary/secondary circuit malfunction". What does this mean and is it harmful to drive. 2007 RX350. Thanks Quote Link to comment Share on other sites More sharing options...
paulenka1 Posted June 5, 2012 Share Posted June 5, 2012 When the check engine light comes on, one or more diagnostic trouble codes (DTC) are stored in the engine control module. try get a code scanner to clear the fault codes. _______________________________________ never say goodbye! ChinaSinoy Blog Quote Link to comment Share on other sites More sharing options...
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