- Faulty or damaged crankshaft or camshaft position sensor.
- Problems with the wiring harness or connectors related to the crankshaft and camshaft sensors.
- An issue with the engine control module (ECM) that interprets the signals from the sensors.
- Check if any other codes and symptoms are accompanying this specific DTC (P0016) to cross-reference and troubleshoot the issue.
- Verify the installation of the timing belt/chain and ensure that all the marks align correctly as per the manufacturer's specifications.
- Inspect the crankshaft and camshaft sensors for any signs of damage, proper positioning, and sensor gaps (refer to the vehicle's repair manual for specific values).
- Check the wiring connections related to the sensors and make sure they are properly secured and free of damage.
- In certain cases, a relearn procedure for the crankshaft and camshaft sensors may be necessary after timing-related work. Refer to the vehicle's service manual for specific instructions on this procedure if applicable.