DTC P0340: Camshaft Position Sensor - Circuit Malfunction: Condition
WARNING: This page is about a different car, the 2002 Suzuki XL-7. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0340 is set when ECM detects no CMP sensor input voltage for 3 seconds with engine start signal being inputted. REF signal pattern is incorrect while POS signal varies or POS signal voltage is too high or too low.