My car is throwing P0411 Secondary Air Injection System Flow Improper, and P0153 Upstream Heated Oxygen Sensor circuit Slow Response - Bank No. 2.
I know the 0411 is because the smog pump isnt hooked up, but could that also be causing the 0153? Or is the o2 going bad? Also my gas mileage has recently gone down about 20-30 miles per tank.
I know the 0411 is because the smog pump isnt hooked up, but could that also be causing the 0153? Or is the o2 going bad? Also my gas mileage has recently gone down about 20-30 miles per tank.