Friday, May 25, 2012

2002 KIA Sedona: Car will not Start with OBD code P0340?

Yes OBD code P0340 can cause the no start condition for car.

Error code P0340 means problem with Camshaft position sensor A circuit bank 1.


While a bad cam sensor can be the cause of a no-start condition,
And the other possibility can be jumped timing belt which would also set the code for P0340.

The cam sensor is behind the upper timing cover:

See the diagram showing its location :----
cam sensor



You remove the upper timing belt cover to replace the cmp sensor. Takes about 30 minutes.

I would suggest removing the timing covers and verifying that the timing is correct and if it is, then replace the sensor. If not, then it needs timing belt job

See the timing marks diagram shown below:
timing marks alignment


To verify what is the correct timing,follow the procedure below:----
you have to remove the #1 spark plug, have someone turn the engine over by using a socket on the crankshaft pulley and turning clockwise while you have your finger over the #1 spark plug hole. When you feel air pushing your finger off the hole. It is at TDC(top dead center). Now look at the timing marks on the camshaft sprockets and on the crankshaft sprocket. They should line up as shown in the diagram I already provided.

The #1 spark plug is the one towards the firewall that is closest to the engine pulleys.

Cam sensor is only $45-55, depending upon store you go to. I would go ahead and replace it to start with, and if still no-start, then you thru the process to check the timing belt.

To replace camshaft position sensor its easy,you can do it.
you can do this yourself.
You will remove the 10mm bolts that hold the upper timing cover(there are 2 upper timing covers- remove the one closest to the front of the vehicle. when facing the belts it will be to your right). Once removed, remove the retaining bolts for the cam sensor, unplug it and remove. Install in reverse.

This details will help.
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