p0430
Moderate
Chrysler · Minivans & Sedans
Catalyst System Efficiency Below Threshold (Bank 2)
Quick Answer
Error code P0430 on your Chrysler Minivans & Sedans means: Catalyst System Efficiency Below Threshold (Bank 2). This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Monitor oxygen sensor signals on bank 2
2
Inspect catalytic converter for restrictions
3
Check exhaust manifold gaskets
4
Verify fuel pressure and injector operation
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Catalytic converter
Oxygen sensor
Exhaust manifold gasket
Hardware fasteners
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