Code No. P0234:
Turbocharger Over Boost
DIAGNOSIS CONTENT
Negative governor deviation below limit
TROUBLE JUDGMENT
Check Condition
Judgment Criterion
- The governor deviation falls below the lower limit for the specified time.
FAIL SAFE FUNCTION
- Boost pressure control is prohibited.
- EGR control is prohibited.
- Torque control is operated.
PROBABLE CAUSE
- Failed boost pressure control system
(Refer to Symptom Procedure - Variable Geometry Solenoid Valve System .)