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Mark, Auto Service Technician
Category: Car
Satisfied Customers: 11332
Experience:  22 Years Experience...Factory Trained and Certified
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Dtc code 016

Customer Question

dtc code 016
Submitted: 7 years ago.
Category: Car
Expert:  Mark replied 7 years ago.

This fault code could be an indication that the timing belt has jumped. I would suggest you start by checking the valve timing.



The CVVT (Continuously Variable Valve Timing) system is installed to the chain sprocket of the exhaust camshaft. There is no variation in valve timing of the exhaust cam because the exhaust camshaft Is driven by the timing belt. The timing of the intake cam is varied by the relative operation the CVVT vane to the housing. This system helps the engine decrease exhaust gases and increase engine power and fuel economy by changing the valve open/close timing of the intake camshaft.

This diagnosis checks the camshaft position plausibility whether the expected range plus some margin is not violated that might be caused by a wrong engine repair, or a chain/belt misalignment. DTC P0016. is set when actual camshaft position is too much retarded or advanced than full retard position or full advance position. To continue the adjustment in such case could lead to a damage of the engine by hitting the valves with the piston.

Customer: replied 7 years ago.
hello i checked the timing belt it is fine i also used a lab scope right at the computer and also changed it all is is well the only thing i did not check was the teeth on the crankshaft
Expert:  Mark replied 7 years ago.

Since you have a scope...check to see if the cam and crank are in sync.


Set up an oscilloscope as follows: Channel A (+): terminal 2 of the CKPS, (-): ground Channel B (+): terminal 2 of the CMPS, (-): ground

Start the engine and check for signal waveform whether synchronize with camshaft sensor or not and tooth is missing refer to sample waveforms as above.




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