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2004 Lancer P0340 Fault: No Start After Cam Sensor Replacement

Model: 04 Lancer Fault Code: P0340 Posted: 2012-01-11 09:55

I own a 2004 Mitsubishi Lancer with a 2.0L engine. While driving, the vehicle suddenly stalled and will not restart. I refilled the fuel tank but still cannot start it. Using an OBD2 scan tool, I received fault code P0340 — indicating a camshaft position sensor issue. I replaced the camshaft position sensor, but the car still won't start and the P0340 code persists. This is a critical issue as I need the vehicle back urgently. Any insights or troubleshooting steps would be greatly appreciated.

Related fault codes

P0340

Comments (5)

Anonymous 2012-01-11 13:57

Could the timing belt have broken? That might explain why the engine isn't starting and the cam sensor is showing a fault.

Anonymous 2012-01-11 15:06

I'll check this when I get home. After reviewing some technical resources, a broken timing belt seems like a plausible cause. I'll update once I've inspected the vehicle.

Anonymous 2012-01-12 17:36

Confirmed — the camshaft is not turning. This strongly suggests a broken timing belt. Is this a 2004 Lancer with an interference engine design?

Anonymous 2012-01-17 17:59

The timing belt has indeed broken. When I attempted to manually rotate the camshaft, I felt valve contact — confirming an interference motor. What should I do now? Does this require removing the cylinder head for inspection and repair?

Anonymous 2012-01-18 08:00

Yes, in my opinion, removing the engine head is the most reliable solution to assess and fix the damage caused by the broken belt.