P0420 Diagnostic Trouble Code Discussion for May 2021
Catalyst Efficiency Below Normal (Bank 1)
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| Help Request | Posted | |
| 2008 Ford Fusion SE 2.3L Surge, MIL Lamp on VIN: 3FAHP07Z18 P0420: Catalyst efficiency. This car came in with the MIL on and the codes listed but the problem though most likely related isn't why I am asking for help. I know the secondary air injection pump is not working. I know the Catalyst is damaged. First, I diagnosed the bad air inj... |
May 21, 2021 |
