Possible causes
– Dirty or low engine oil
– Valve timing
– Oil control valve
– Variable Valve Timing controller assembly
– Engine Control Module (ECM)
– Valve timing
– Oil control valve
– Variable Valve Timing controller assembly
– Engine Control Module (ECM)
Tech notes
There is a service bulletin for the following Toyota models:
2002 Toyota Camry
2002 Toyota Solara
2001