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is your oil full,correct level,correct weight/viscosity?
see if this link helps.Has anything been done with this vehicle recently (I.E. Head gasket replaced?) Has anyone cleaned/replaced the OCV (Oil Control Valve) filter?
Sometimes the filters on the oil control valves get clogged… Although links are not for a Corolla, you can get the gist of it…
http://www.newcelica.org/forums/showthread.php?t=250432
If the timing chain has been off recently, the timing may be off and it will throw this code as well…
-Karl
If oil is good, no timing work recently done (and timing marks and white chain links line up) and the filter is clean then there is a test you can do with a Toyota scan tool (cost around $50 on EBAY) to test the VVT Actuator…. Occasionally, these actuators get locked closed (or not rotate freely) and will not act properly when commanded and the oil PSI gets above 20 lbs. The Camshaft position sensor tells this to the ECM and you will get a VVT error code.
When your ECM reads that you are going a certain speed/rpms, the VVT actuator should unlock. The test with the scan tool actually will trigger the VVT Actuator to open at idle and when the car bogs down, you know it is working… If nothing happens, you have a bad actuator (big round thing on intake camshaft by the sprocket). There is a special procedure to replace this when putting it back on the cam, it has to be unlocked with shop air, then torqued to specs, then re-locked before installation…
-Karl
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