P0474 - Exhaust Pressure Sensor A Circuit Intermittent/Erratic

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2022 Ford F-550 Super Duty, 2022 Ford F-450 Super Duty, 2022 Ford F-350 Super Duty, 2022 Ford F-250 Super Duty, and 2021 Ford F-550 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

DTC DESCRIPTION P0474 - EXHAUST PRESSURE SENSOR A CIRCUIT INTERMITTENT/ERRATIC

For F-150
Description: This DTC sets when the input signal to the PCM from the exhaust pressure (EP) sensor becomes intermittent or erratic.
Possible Causes: EP circuit intermittently open Damaged EP sensor Damaged harness connector Damaged harness Damaged Variable Geometry Turbocharger (VGT) harness Damaged VGT harness connector Damaged VGT actuator Stuck or binding VGT turbocharger
Diagnostic Aids: Check the harness for intermittent concerns, incorrect connections, routing, alterations and damage due to contact with other components.
For All Others
Description: This DTC sets when the input signal to the PCM from the exhaust pressure (EP) sensor becomes intermittent or erratic.
Possible Causes: EP circuit intermittently open Damaged EP sensor Damaged harness connector Damaged harness
Diagnostic Aids: Check the harness for intermittent concerns, incorrect connections, routing, alterations and damage due to contact with other components. Check for correct VGT turbocharger operation.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	GO to PINPOINT TEST X .