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 that requires immediate diagnosis.
Diagnosis Details
Possible Causes
Immobilizer or key transponder issue – The anti-theft system may not recognize the key, cutting fuel or spark after start.
Fuel pump or fuel pressure regulator failure – The pump primes but loses pressure, or the regulator fails, causing stall.
Mass airflow (MAF) sensor or vacuum leak – Incorrect air/fuel mixture causes stall after start.
Crankshaft or camshaft position sensor failure – The ECU loses timing signal and kills the engine.
Related OBD-II Codes
Not satisfied with this diagnosis?
Try Another DiagnosisWhat To Do Next
What You Should Do
Try a second key if available.
Check for security light behavior.
Scan for diagnostic trouble codes.
Listen for fuel pump prime.
Inspect for vacuum leaks.
Test fuel pressure and MAF sensor.
Related Repairs
Share this diagnosis
Help others with similar symptoms
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.
