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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 668 (Engine Controls - Powertrain DTC Charts And Descriptions (Except Diesel & Hybrid)) >> DTC Diagnosis >> P0133 - O2 Circuit Slow Response (Bank 1, Sensor 1)

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

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P0133 - O2 CIRCUIT SLOW RESPONSE (BANK 1, SENSOR 1)

Description:  The heated oxygen sensor (HO2S) monitor checks the HO2S frequency and amplitude. The test fails if the frequency and amplitude fall below a calibrated limit during testing.
Possible Causes: 
  • Contaminated HO2S
  • Exhaust leaks
  • Short/open wiring
  • Incorrect fueling
  • MAF sensor
  • Deteriorating HO2S
  • Inlet air leaks
Diagnostic Aids:  Access the HO2S test results from the generic OBD menu to verify the DTC.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All - - refer to PINPOINT TEST DW .
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