STEP 1. Check of short circuit to power supply in LSFL line between left bank linear air-fuel ratio sensor connector and ECM connector.
STEP 2. Check of short circuit to power supply in LPFL line between left bank linear air-fuel ratio sensor connector and ECM connector.
STEP 3. Check of short circuit to power supply in LEFL line between left bank linear air-fuel ratio sensor connector and ECM connector.
STEP 4. Test the OBD-II drive cycle.
STEP 5. Replace the left bank linear air-fuel ratio sensor.
STEP 6. 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 21 . (2) Check the diagnostic trouble code (DTC).
Is DTC P0152 set?
Retry the troubleshooting. The inspection is complete.