Engine Stalling – Idle and Sensor Related Codes

Stalling at idle is often idle control, dirty throttle, vacuum leaks, or MAF. Stalling while driving raises the priority — crank sensor and fuel delivery become top suspects.

What To Do Next

Scan immediately. Clean throttle body, check for vacuum leaks, and verify CKP sensor if stalling is intermittent while moving.

Practical Tips

Stalling in traffic is a safety issue — diagnose promptly.

Intermittent stall + restart OK can be CKP or fuel pump related.

After cleaning the throttle, an idle relearn procedure may be required on some cars.

Common Related Codes

These codes frequently appear with this symptom. Click for causes, cost estimates and repair steps.

Code	Description	Severity
P0300	Random/Multiple Cylinder Misfire Detected	High
P0171	System Too Lean (Bank 1)	Med
P0335	Crankshaft Position Sensor A Circuit Malfunction	High
P0101	Mass or Volume Air Flow Circuit Range/Performance	Med
P0505	Idle Air Control System Malfunction	Med
P0506	Idle Air Control System RPM Lower Than Expected	Med

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