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 P204B (PCM) - REDUCTANT PRESSURE SENSOR CIRCUIT RANGE/PERFORMANCE
2021 Ford Edge SE, 4WD
DTC P204B (Pcm) - REDUCTANT Pressure Sensor Circuit Range/Performance
2021 Ford Edge SE, 4WDSECTION DTC P204B (Pcm) - REDUCTANT Pressure Sensor Circuit Range/Performance
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.
P204B (PCM) - REDUCTANT PRESSURE SENSOR CIRCUIT RANGE/PERFORMANCE
| Description: | The PCM carries out a plausibility check on the reductant pressure sensor during startup after a successful purge cycle, when the reductant pressure line has been drained. This DTC sets when the reductant pressure sensor signal exceeds 30 kPa (4.4 psi). | ||
| Possible Causes: |
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| Diagnostic Aids: | Diagnose and repair all circuit DTCs before diagnosing DTC P204B. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST RF . | ||
RENDER: 1.0x
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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.