What does code P0424 mean?
The temperature of the heated catalytic converter on bank 1 is below the expected operating range.
OBD-II Code
P0424 — Heated Catalyst Temperature Below Threshold (Bank 1
The temperature of the heated catalytic converter on bank 1 is below the expected operating range.
Common symptoms
- High emissions
- strong exhaust odor
Possible causes
- Faulty catalyst temperature sensor
- failing internal heater circuit
Initial recommendation
Inspect catalyst temperature sensor and heater circuit functionality.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0424 with your vehicle's actual symptoms for more complete diagnostic guidance.
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