p0430
Moderate
Land Rover · SUVs
Catalyst System Efficiency Below Threshold (Bank 2)
Quick Answer
Error code P0430 on your Land Rover 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
Perform diagnostic scan and note other codes
2
Inspect exhaust components for damage
3
Monitor oxygen sensor voltages
4
Measure catalytic converter temperature
5
Replace catalytic converter if inefficient
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 sensor (downstream)
Exhaust clamps and hangers
Gaskets and seals
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