LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lincoln >> 2020 >> Aviator Base, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Powertrain DTC Descriptions (Except Diesel & Hybrid) - DTC P0001 - P0238 >> DTC P0133 - O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC 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, GO to PINPOINT TEST DW .
KA  
All others GO to PINPOINT TEST DZ .
scientia non olet · About LEMON Manuals