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DTC P0133: O2 Circuit Slow Response (Bank 1, Sensor 1)

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

Description:  The powertrain control module (PCM) commands an air/fuel ratio that changes in the shape of a square wave. The PCM calculates the length of the resulting signal from the universal HO2S. The test fails when the length of the signal is less than a calibrated limit.
Possible Causes: 
  • Contaminated HO2S sensor
  • Exhaust leaks
  • Short/open wiring
  • Incorrect fueling
  • Mass air flow (MAF) sensor
  • Intake air leaks
  • Damaged universal HO2S
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 DZ .
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