P20EE - SCR NOX Catalyst Efficiency Below Threshold (Bank 1)
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 P20EE - SCR NOX CATALYST EFFICIENCY BELOW THRESHOLD (BANK 1)
| Description: The efficiency of the selective catalytic reduction (SCR) catalyst to remove nitrogen oxides (NOx) from the exhaust gas is calculated based on the upstream and the downstream NOx measurements. This DTC sets when the SCR catalyst efficiency is below a calibrated threshold for a calibrated amount of time. | |||
Possible Causes:
|
|||
| Diagnostic Aids: | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST RD . | ||