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P05CA

Economy Mode Switch Circuit High

Generic OBD-II

Common symptoms

What you'll notice

Common causes

Most likely first

  1. Malfunctioning economy mode switch
  2. Faulty wiring or connectors in the circuit
  3. Issues with the economy mode switch control module
  4. Electrical problems, such as a short circuit or open circuit
  5. Possible issues with the vehicle's battery or power supply

How to diagnose & fix

Work through it in order

  1. Engine not starting or difficulty starting
  2. Poor engine performance or reduced power
  3. Malfunction indicator lamp (MIL) or check engine light illuminated
  4. Reduced fuel efficiency or higher fuel consumption
  5. Transmission shifting issues or failure

Read & clear P05CA yourself

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