DTC P0430: Catalyst System Efficiency Below Threshold (Bank 2)
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2005 Mercury Sable, 2005 Mercury Mountaineer, 2005 Mercury Monterey, 2005 Mercury Montego, and 2005 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.
P0430 - CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (BANK 2)
| Description: | Indicates the bank 2 catalyst system efficiency is below the acceptable threshold. | ||
| Possible Causes: | See the possible causes for DTC P0420 . | ||
| Diagnostic Aids: | See the diagnostic aids for DTC P0420 . | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | - | - | GO to HF: Catalyst Efficiency Monitor and Exhaust Systems STEP HF1. |