STEP 1. Check whether the variable valve lift sensor is installed properly.
STEP 2. Check of harness damage in VLS5 line between ECM connector and variable valve lift sensor connector.
STEP 3. Check of open circuit and harness damage in VLSE line between ECM connector and variable valve lift sensor connector.
STEP 4. Check of harness damage in VLS line between ECM connector and variable valve lift sensor connector.
STEP 5. Variable valve lift mechanism check
STEP 6. Check the trouble symptoms.
STEP 7. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 23 . (2) Check the diagnostic trouble code (DTC).
Is DTC P264B stored?
Retry the troubleshooting. The inspection is complete.