P0079

Описание

Exhaust Valve Control Solenoid, Signal too Low (Bank-1)

Частые симптомы

• Reduced exhaust system performance
• Check Engine Light
• Possible exhaust system limiting
• Reduced engine breathing
• Possible exhaust system default mode

Возможные причины

• Short to ground in exhaust valve control circuit
• Failed exhaust valve control solenoid
• Low system voltage
• Corroded ground connections
• ECU driver circuit issue

Диагностика

1. 1. Check battery and charging system
2. 2. Test for shorts to ground in exhaust circuit
3. 3. Inspect exhaust valve control solenoid operation
4. 4. Check ground connections
5. 5. Test ECU exhaust control output

Решения по ремонту

• Repair shorted exhaust control wiring to ground
• Replace faulty exhaust valve control solenoid
• Charge or replace battery if needed
• Clean and tighten ground connections
• Replace ECU if driver circuit failed

Профилактика

• Maintain good electrical system health
• Protect exhaust system wiring from heat damage
• Regular exhaust system electrical checks