P0344 - Camshaft Position Sensor Intermittent
There has to be a count of 20 failures before the error code will light up.
Have the dealer check the connector where the sensor plugs into the main harness. The pins in the connector may be flexing due to under-hood heat and intermittently loosing contact.
I bet this doesn't happen until the car gets up to operating temperature, and is more prone to happen when idling at a traffic light than to happen while at cruising speed.
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