P0133 - O2 Circuit Slow Response (Bank 1, Sensor 1)
WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
P0133 - O2 CIRCUIT SLOW RESPONSE (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: |
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| 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 . |