Help please

[Chris calif]

I have a 2010 Hyundai Genesis sedan 4.6 L and I was driving yesterday and all the sudden it starts misfiring . So I plugged the code reader into it and it says 135 and 7 cylinder misfire what would cause that please help

 

[Gunkk]

to the forum

Please always post the all of the complete code number(s) in the format P####

Is that a P0301, P0303, P0305, and P0307 misfire -- i.e. the entire bank of all four cylinders 1, 3, 5, and 7? Or a P0135 code *AND* a misfire on just cylinder 7 (P0307)?

Fun part is the P0135 is a bank 1 O2 sensor heater code, which could throw off the ECU and potentially cause misfires on all bank 1 cylinders, which just happen to be 1, 3, 5, and 7. And that's why specifics matter. ;-)