DTC P20E9 (PCM) - Reductant Pressure Too High
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 P20E9 (PCM) - REDUCTANT PRESSURE TOO HIGH
| Description: | The PCM continuously monitors selective catalytic reduction (SCR) system pressure during closed-loop operation. This DTC sets when the system pressure exceeds 650 kPa (88 psi) for 10 seconds, or 790 kPa (115 psi) for 1 second. | ||
| 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. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST RG . | ||