Code No. P129B: Variable Geometry Control Motor Position Over The Setpoint
TROUBLE JUDGMENT
- Discrepancy: the actuator opens more 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
)