p0430
Moderate
Jeep · SUVs
Catalyst System Efficiency Below Threshold (Bank 2)
Quick Answer
Error code P0430 on your Jeep SUVs means: Catalyst System Efficiency Below Threshold (Bank 2). This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Compare oxygen sensor readings before and after Bank 2 converter
2
Inspect exhaust system for leaks or damage
3
Check fuel system for rich condition
4
Measure converter back pressure
5
Replace catalytic converter if needed
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 (Bank 2)
Oxygen sensors
Exhaust pipes
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