GM OBD Trouble Code 57
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.