P004A

Описание

Turbocharger / Supercharger Boost Control 'B', Circuit Open

Частые симптомы

• Secondary turbo system issues
• Uneven boost between turbos
• Check Engine Light
• Reduced twin-turbo performance
• Possible boost imbalance

Возможные причины

• Open circuit in secondary boost control wiring
• Failed secondary boost control solenoid
• Blown secondary boost system fuse
• Corroded secondary electrical connectors
• Secondary wiring harness damage

Диагностика

1. 1. Check secondary boost control system fuse
2. 2. Test continuity to secondary boost solenoid
3. 3. Compare primary and secondary circuit resistance
4. 4. Inspect secondary specific wiring
5. 5. Test ECU secondary boost output

Решения по ремонту

• Replace blown secondary fuse
• Repair open wiring on secondary system
• Replace faulty secondary boost solenoid
• Clean secondary corroded connectors
• Repair secondary wiring harness

Профилактика

• Address twin-turbo specific electrical issues
• Protect secondary turbo wiring
• Regular twin-turbo system checks