Mitsubishi Lancer EVO 9 P0365 Fault: Crankshaft Position Sensor Issue at 3000 RPM+
Hi everyone, I'm Manaf, and I own a 2006 Mitsubishi Lancer EVO 9 MR with a 2.0L 4G63 engine (4-cylinder turbo MIVEC). The car has been running smoothly up to 45,000 miles until recently. At around 3000 RPM and above, the vehicle starts exhibiting misfire symptoms. The OBD2 diagnostic tool shows a P0365 code — which indicates a crankshaft position sensor circuit fault. I tested both the intake and exhaust camshaft sensors (commonly mistaken for crankshaft) by removing their connectors and measuring voltage with a multimeter: when disconnected, both showed 12V on power and 5V on signal wires. When reconnected, the readings were: intake cam sensor — 12V power, 0.22V signal; exhaust cam sensor — 12V power, 2.5V signal. I swapped both sensors to rule out faulty units, but the symptoms and signal values remained unchanged. The car has new spark plugs and a new fuel pump installed, so these are not the root causes. My question: Is the sensor signal output within acceptable range? What should I check next? I've been troubleshooting this for about one month with no success. Any guidance on what to inspect or test would be greatly appreciated. Thank you, Manaf
The P0365 code refers to the crankshaft position sensor circuit, not the camshaft sensors. A quick inspection of the plug and wiring connections should be performed — look for corrosion, loose terminals, or damaged wires. A faulty crankshaft position sensor can cause engine stalling or misfiring at high RPMs. If possible, connect your analog multimeter to the signal terminal of the crankshaft sensor while cranking the engine with the starter. You should observe a pulsing waveform — this confirms proper sensor operation. If no pulses are detected, the sensor is likely faulty and needs replacement.