1127 7

UnclassifiedLubrication

What This Code Means

Boost pressure was not limited during a decel; No boost pressure detected; Insufficient boost pressure detected

Possible Causes

  • •Problem with the boost limiting circuit

Suggested Actions

  1. 1Check the boost pressure sensor connection
  2. 2Check for disconnected hoses or leaks in the boost pressure air path
  3. 3Check for leakage past the boost valve diaphragm by applying vacuum to the control port
  4. 4Replace the valve
  5. 5Check the post pressure sensor connection
  6. 6Check the air ducting for secure connections
  7. 7Check the turbocharger for seizing

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