P0133 - O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)

DTC DESCRIPTION P0133 - O2 SENSOR CIRCUIT SLOW RESPONSE (BANK 1 SENSOR 1)

Description:	The PCM monitors oxygen sensor response time by commanding a calibrated fuel control routine. This routine sets the air fuel ratio to a calibrated limit to produce a predictable oxygen sensor signal amplitude. This DTC sets when the oxygen sensor signal does not reach the predicted amplitude within a predetermined response time.
Possible Causes:	Exhaust leaks Incorrect fueling Mass airflow (MAF) sensor (if equipped) Intake air leaks Contaminated universal heated oxygen sensor bank 1, sensor 1 (HO2S11) (if equipped) Contaminated HO2S11 (if equipped) Deteriorating universal HO2S11 (if equipped) Deteriorating HO2S11 (if equipped)
Diagnostic Aids:
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
EcoSport 1.5L, KA	GO to Pinpoint Test DW.
All others	GO to Pinpoint Test DZ.