Welcome to JustAnswer, my name is XXX XXX I'm here to help get your problem resolved. Ask follow up questions, thanks. This usually means oil is low or exhaust cam actuator has failed. Check and verify that the engine oil has been in for at least 100 miles. If not, drive vehicle with the new oil for at least 100 miles to allow the fresh detergent a chance to "unstick" a possible sticking solenoid or actuator. Remove the exhaust cam actuator solenoid from the cylinder head. Inspect the solenoid screens to be present and without damage. Verify that engine oil pressure is 30-70 PSI at 1000 RPM, engine at operating temperature.

This usually means oil is low or exhaust cam actuator has failed. Check and verify that the engine oil has been in for at least 100 miles. If not, drive vehicle with the new oil for at least 100 miles to allow the fresh detergent a chance to "unstick" a possible sticking solenoid or actuator. Remove the exhaust cam actuator solenoid from the cylinder head. Inspect the solenoid screens to be present and without damage. Verify that engine oil pressure is 30-70 PSI at 1000 RPM, engine at operating temperature.

Here are replacement instructions.

http://db.tt/43b0tjwo

Its about a $150 part and 1.6 hour job at shop so you will be spending around $350 to have it replaced at shop. Thanks.