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What Does P0429 Code Mean?

    OBD-II Code P0429 is defined as a Catalyst Heater Control Circuit

    Some Catalytic Converters are electronically heated to get the Catalytic Converter up to operating temperature quicker. If the heating element fails, the engine control module (PCM) will set code P0429.

    Common Problems That Trigger the P0429 Code

    • Catalytic converter failure
    • Catalytic converter failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue
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