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GM OBD Trouble Code 57

By Jim Taddei, May 1, 2009

Boost control error

The ECM monitors turbocharger boost using the MAP sensor input. If turbocharger boost is to high or too low code 57 will be set.

Fault Code Description

  • 57 - Boost control error

Symptoms

  • Lack of power
  • Engine ping

Common Problems

  • Turbocharger waste gate failure
  • Vacuum leak to waste gate or waste gate solenoid.

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