DTC P123F - NOX Sensor Communication Intermittent (Bank Sensor 2)
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2019 Ford Transit-350 HD, 2019 Ford Transit-350, 2019 Ford Transit-250, 2019 Ford Transit-150, and 2019 Ford F-550 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
DTC DESCRIPTION P123F - NOX SENSOR COMMUNICATION INTERMITTENT (BANK SENSOR 2)
| For F-650/F-750 | |||
| Description: | This DTC sets when the communication signal from the nitrogen oxides bank, sensor 2 (NOx12) module is no longer detected. | ||
| Possible Causes: |
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| Diagnostic Aids: | The presence of this DTC may indicate that the vehicle is operating in derate mode and may experience a loss of power. After repair, the vehicle may still display a system warning message. Drive the vehicle until the system warning message has cleared from the instrument cluster message center. | ||
| For All Others | |||
| Description: | This DTC sets when the DTC U029E is set. The exhaust fluid system fault message may be enabled in the instrument cluster message center for this DTC. | ||
| Possible Causes: | |||
| Diagnostic Aids: | This DTC is an informational DTC and may be accompanied by other DTCs. Diagnose all other DTCs first. The presence of this DTC may indicate that the vehicle is operating in derate mode and may experience a loss of power. After repair, the vehicle may still display a system warning message. Drive the vehicle, while carrying out the appropriate drive cycle procedure, until the system warning message has cleared from the instrument cluster message center. Refer to DRIVE CYCLES , for additional information. |
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| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| F-650/F-750 | GO to PINPOINT TEST RD . | ||
| All others | Refer to the Description, Possible Causes and Diagnostic Aids for the DTC. | ||