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P056C

Cruise Control Cancel Signal

Generic OBD-II

Common symptoms

What you'll notice

Common causes

Most likely first

  1. Faulty cruise control switch
  2. Loose or damaged cruise control wiring
  3. Faulty cruise control module
  4. Malfunctioning brake switch
  5. Incorrect or incompatible programming

How to diagnose & fix

Work through it in order

  1. Cruise control fails to engage or maintain speed
  2. Engine stalling or surging while using cruise control
  3. Inability to change or accelerate/decelerate cruise control settings
  4. Illumination of the check engine light
  5. Loss of power or reduced engine performance while cruise control is in use

Read & clear P056C yourself

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