Code No. P129A: Variable Geometry Control Motor Position Below The Setpoint




TROUBLE JUDGMENT



  • Discrepancy: the actuator opens less than the setting

FAIL SAFE FUNCTION



  • Injection shut-off, as if the driver was in overrun.

PROBABLE CAUSES



  • Failed variable geometry control motor
  • Failed electrical harness in variable geometry control motor circuit (Refer to Symptom Procedure - Variable Geometry Control Motor System )