P20BD (PCM) - Reductant Heater B Control Circuit/Open
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 P20BD (PCM) - REDUCTANT HEATER B CONTROL CIRCUIT/OPEN
| Description:
During that test the PCM enables the glow plug control module (GPCM) which monitors each individual reductant heater and harness for concerns. When the GPCM detects a concern with a reductant heater or harness, the GPCM sends a message to the PCM which sets this DTC. |
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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 RH . | ||