DTC P20EE - SCR NOX Catalyst Efficiency Below Threshold (Bank 1)
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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: |
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| Diagnostic Aids: | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST RD . | ||