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👉 Catalyst System Efficiency Below Threshold.
l➤ DTC Code Finder:
l➤ Find the Diagram of your vehicle here:
0:00 OBD2 code P0420
0:16 Meaning of fault p0420
0:51 DTC code P0420 Symptoms
1:27 Causes of Error P0420
1:57 Solutions for DTC P0420 Troubleshooting
2:30 P0420 Fault FAQ
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