Fault codes › P0045

P0045

Turbocharger/Supercharger Boost Control A Circuit/Open

Generic code Injector Circuit High severity Hard repair
Free on OBD DashX

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iWhat P0045 means

  • The P0045 fault code indicates that there is an issue with the boost control circuit for the turbocharger or supercharger.

!Possible symptoms

  • Reduced engine power and acceleration
  • Poor fuel economy
  • Illumination of the check engine light
  • Engine stalling or rough idle
  • Loud whistling noise from the turbo or supercharger.

?Possible causes

  • Failed boost pressure sensor
  • Faulty boost control solenoid valve
  • Short or open circuit in the boost control wiring
  • Low or high boost pressure
  • Clogged or damaged turbo or supercharger
  • Possible

Related parts

  • Turbocharger/Supercharger: Turbocharger compresses in more air into the engine, hence producing more power output. Problem leads to power loss

Possible solutions

  • Replace faulty boost pressure sensor
  • Replace faulty boost control solenoid valve
  • Check and repair any short or open circuit in the boost control wiring
  • Check and adjust the boost pressure to the correct level
  • Check and clean or replace a clogged or damaged turbo or supercharger
Free on OBD DashX

P0045 on OBD DashX

Real-world causes, how often this code shows up, and the fix — step by step.

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