Home >> Toyota >> 2003 >> Matrix Base, FWD, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self Diagnostics >> Diagnostic Tests >> DTC P1692: OCV For VVTL Open Malfunction / Bank No. 1 (Matrix 2ZZ-GE Engine Model Only) & DTC P1693: OCV For VVTL Close Malfunction / Bank No. 1 (Matrix 2ZZ-GE Engine Model Only) >> Possible Causes