My truck had a dtc of po135 it says heater circuit bank 1 sensor 1 what kind of problems will that cause. i cleared it and it hasn't come back. My truck is cutting off at 56 or 5700 rpm's and the rev limiter is set to 6200 what could the problem be??

 

TTT, getting the same problem...Help!

 

Bank one side of the motor before the cat o2 is having issues... how many miles?

 

about 50K miles

 

shouldnt be a bad 02 yet. check wiring and all, if you want to know switch the 2 front 02's and see if the problem goes to bank 2

 

I put another O2 and i think it fixxed the problem.