Check Engine Light With Stalling: Quick Diagnosis
Key Takeaway
Car stalling with the CEL on? Run through this quick diagnosis.
Stalling Diagnosis By Symptom
| When It Stalls | Likely Cause | Code(s) |
|---|---|---|
| At idle (warm) | IAC valve, vacuum leak | P0505, P0171 |
| When stopping | Torque converter, IAC | P0741, P0505 |
| Under acceleration | Fuel pump, misfire | P0087, P0300 |
| When shifting | Transmission issue | P0700, P0715 |
| Only when cold | Coolant temp sensor | P0115, P0118 |
| Randomly | Crankshaft position sensor | P0335 |
The Stalling King: CKP Sensor
The Crankshaft Position Sensor is the #1 cause of random stalling. When it fails intermittently, the ECM shuts down. Code P0335.
ProHow Steer Helps
Steer captures the fault code and identifies the stalling pattern, helping you zero in on the cause without trial and error.
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