Service Engine Soon light

gomer_110

P0139

P0159

Not sure what mods you have but I'd checking for intake leaks. It's hard to believe that both O2 sensors failed at the same time. It's also hard to believe that an exhaust leak appeared on both banks at the same time.

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'17 Titan Bone Stock

scottIN

I figured those were both banks. And I thought the same thing - weird to have problems in both at the same time since they're essentially independent.

I didn't have them clear the codes, but I just ordered a code reader and will first check for leaks, clean at least the front senors, erase the codes and see what happens. At least now I'll have my own reader - I thought they were like $300 but I found a highly rates one on Amazon for $42.