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Home >> Ford >> 2005 >> Escape Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 35 (Engine Controls - Powertrain DTC Charts And Description - (Hybrid)) >> Diagnostic Trouble Code (DTC) Charts and Descriptions >> DTC P0133: Ho2S Sensor Circuit Slow Response (Ho2S-11)

DTC P0133: Ho2S Sensor Circuit Slow Response (Ho2S-11)

WARNING: This page is about a different variant/trim than selected.
P0133 - HO2S SENSOR CIRCUIT SLOW RESPONSE (HO2S-11)

Description:  The heated oxygen sensor (HO2S) monitor checks the HO2S frequency and amplitude. If during testing the frequency and amplitude fall below a calibrated limit, the test fails.
Possible Causes: 
  • Contaminated HO2S sensor.
  • Exhaust leaks.
  • Shorted/open wiring.
  • Improper fueling.
  • Mass air flow (MAF) sensor.
  • Deteriorating HO2S sensor.
  • Inlet air leaks.
Diagnostic Aids:  Access the HO2S test results from the Generic OBD-II menu to verify the DTC.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All - - GO to Pinpoint Test H .
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