Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2021EDGE SE, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 12 (ENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS (DIESEL))DIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONSDTC P203E (DCU) - REDUCTANT LEVEL SENSOR A CIRCUIT INTERMITTENT/ERRATIC
2021 Ford Edge SE, 4WD
DTC P203E (DCU) - REDUCTANT Level Sensor A Circuit Intermittent/Erratic
2021 Ford Edge SE, 4WDSECTION DTC P203E (DCU) - REDUCTANT Level Sensor A Circuit Intermittent/Erratic
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2018 Ford Transit-350 HD, 2018 Ford Transit-350, 2018 Ford Transit-250, 2018 Ford Transit-150, and 2018 Ford F-550 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
P203E (DCU) - REDUCTANT LEVEL SENSOR A CIRCUIT INTERMITTENT/ERRATIC
| Description: | This DTC sets when the DTC P203A 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 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 |
| All | Refer to the Description, Possible Causes and Diagnostic Aids for the DTC. | ||
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.