how do I fix it"

Question

Engine light came on, has been coming on and able to fix with new gas cap.  But not this time,
code is PO153 - 02 sensor CKT slow responce(bank 2 sensor1)

Answer 1

Hi there,

Normally this code is a result of a bad front O2 sensor. This is the first sensor on the exhaust on the passenger side of the truck. Either in the exhaust manifold or just after it. It's BEFORE the catalytic converter.