What does code P0420 mean on Land Rover vehicles?
The catalytic converter efficiency on bank A is below threshold.
OBD-II Code Land Rover
P0420 — Land Rover — Catalyst Efficiency Below Threshold Bank A
The catalytic converter efficiency on bank A is below threshold.
Common symptoms
- Check engine light
Possible causes
- Faulty catalytic converter or oxygen sensors
Initial recommendation
Diagnose catalytic converter and O2 sensors on bank A.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine Land Rover code P0420 with your vehicle's actual symptoms for more complete diagnostic guidance.
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