DTC P0133: - O2 Circuit Slow Response (Bank 1, Sensor 1)
DTC P0133: - O2 CIRCUIT SLOW RESPONSE (BANK 1, SENSOR 1)
| Description: | For the Flex, MKS, Sable PZEV, Taurus PZEV, Taurus X PZEV, 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 HO2S. The test fails when the length of the signal is less than a calibrated limit. For all others, the PCM checks the HO2S signal frequency and amplitude. The test fails when the frequency and amplitude less than a calibrated limit. |
||
| Possible Causes: |
|
||
| 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 |
| E-Series 4.6L, E-Series 5.4L, Expedition, F-150, Flex, MKS, Navigator, Sable PZEV, Taurus PZEV, Taurus X PZEV |
- | - | GO to Pinpoint Test DZ . |
| All others | - | - | GO to Pinpoint Test DW . |