DTC P0133: O2 Sensor Circuit Slow Response: Diagnosis/troubleshooting

NOTE:

Fig 1: P0133 Work Instruction (O2 Sensor Circuit Slow Response)

Courtesy of PORSCHE OF NORTH AMERICA, INC.

NOTE:

Do not confuse oxygen sensor ahead of catalytic converter and oxygen sensor after catalytic converter.

Oxygen sensors ahead of and after catalytic converter

Fig 2: Locating Oxygen Sensors (O2 Sensor Circuit Slow Response)

Courtesy of PORSCHE OF NORTH AMERICA, INC.