Kia Rio 2013 1.4L P0335: Engine Dies at Stop, No RPM Signal – How to Diagnose and Fix?
Hi everyone, My little brother drives a 2013 Kia Rio with a 1.4L engine. The car suddenly dies when coming to a complete stop. Occasionally, it starts without any RPM signal — requiring a restart. In some cases, the engine won't start at all and needs two attempts (cranking) before it starts. Using Launch EasyDiag 3.0, I detected fault code P0335: 'Crankshaft Position Sensor A Circuit Malfunction'. I performed an electrical diagnosis using AllData, which showed no open or short circuits. Voltage output and resistance values matched the manufacturer specifications. I also visually inspected the crankshaft flywheel and found engine oil residue on part of it — I cleaned it thoroughly, but the issue persists. My question: Does this mean the crankshaft position sensor is faulty? Could temperature-related changes cause the sensor to go out of specification? Any insights or troubleshooting steps would be greatly appreciated! Thank you all for your help.
Intermittent signal from crankshaft position sensor. To verify, monitor the crankshaft signal using an oscilloscope and try wiggling or taping the sensor to simulate a fault. If you can't reproduce the error under controlled conditions but the P033-5 code continues to appear, the most likely cause is a faulty crankshaft position sensor. A P0335 'check engine light' code may be caused by: - Damaged or loose CKP sensor connector - A damaged reluctor ring (missing teeth or not rotating due to sheared keyway) - Open circuit in the sensor output - Shorted sensor output to ground - Shorted sensor output to power voltage - Failed crankshaft position sensor - Broken timing belt - Faulty Powertrain Control Module (PCM) Read more: P0335