Engine Starts Then Dies Immediately
The engine starts but stalls right away, indicating a fuel, air, or security system issue. This is a no-drive condition.
Diagnosis Details
Possible Causes
Faulty fuel pump or fuel pump relay – not maintaining pressure after initial start.
Immobilizer or anti-theft system malfunction – key not recognized, causing engine shutdown.
Vacuum leak or mass airflow sensor (MAF) issue – incorrect air/fuel mixture after start.
Related OBD-II Codes
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What You Should Do
Check fuel pressure at the rail; if low, test fuel pump relay and pump.
Verify security light behavior (should turn off after key on).
Inspect MAF sensor and intake for leaks.
Scan for trouble codes.
Related Repairs
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.
