DTC P0133 & P0153: Front Ho2S Circuit Slow Response: Condition

WARNING: This page is about a different car, the 2002 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0133 is for right front HO2S. DTC P0153 is for left front HO2S. DTC is set when HO2S response rate is below predetermined level. DTC P0133 is set for right front HO2S. DTC P0153 is set for left front HO2S. Possible causes are:

HO2S coated with contaminants.
Exhaust leak.
Open or shorted circuit.
Improper fuel.
Faulty MAF sensor.
Leak in air induction system.
Deteriorating HO2S.