Mitsubishi Automotive Error Code P0340: How to Fix It

Q: Can I drive my Mitsubishi with P0340 error code?

You can drive short distances, but it's not recommended for extended periods. The P0340 code can cause poor engine performance, reduced fuel economy, and potential engine damage if left unaddressed. Have it diagnosed and repaired as soon as possible.

Q: How much does it cost to fix P0340 on a Mitsubishi?

If it's just the camshaft position sensor, expect to pay $50-150 for the part plus $100-200 for labor at a shop. DIY replacement costs only the sensor price. However, if wiring repairs or timing issues are involved, costs can be significantly higher.

Q: What causes P0340 code to keep coming back?

Recurring P0340 codes are often caused by wiring issues, oil contamination of the sensor area, timing chain stretch, or camshaft problems. If the code returns after sensor replacement, have the timing system and wiring harness thoroughly inspected.

Q: Will P0340 cause my Mitsubishi to fail emissions testing?

Yes, P0340 is an emissions-related code that will typically cause your vehicle to fail an emissions test. The code must be resolved and the vehicle must complete its drive cycles before it will pass inspection.

Q: How do I know if it's the camshaft position sensor or wiring?

Test the sensor's resistance with a multimeter and check for proper voltage at the connector. If the sensor tests good but there's no power or ground at the connector, the problem is in the wiring or PCM. If voltage is present but the sensor tests bad, replace the sensor.

Abstract

The P0340 error code in your Mitsubishi indicates a problem with the Camshaft Position Sensor A Circuit. This sensor helps your engine's computer determine the precise position of the camshaft for proper fuel injection and ignition timing. When this circuit fails, you may experience rough idling, poor acceleration, or difficulty starting your vehicle.