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P0400 - Exhaust Gas Recirculation Flow Malfunction
Possible causes
- Exhaust Gas Recirculation (EGR) solenoid valve harness is open or shorted
- Exhaust Gas Recirculation (EGR) solenoid valve circuit poor electrical connection
- Exhaust Gas Recirculation (EGR) volume control valve stuck closed
- Faulty Exhaust Gas Recirculation (EGR) volume control solenoid valve
- Dead (Weak) battery
- Faulty EGR temperature sensor and circuit
- Faulty EGR Valve
What else can I help you with?
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Trouble code P0400 means: EGR System Performance
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