Highlander 4WD V6-3.5L (2GR-FE) (2008)
/Page-1019003.png)
Is the AFS Voltage B#S1 = 3.35~3.70V AND the O2S B#S2 = O.70~0.90V?
^
YES - Replace the appropriate bank Air Fuel Ratio Sensor ONLY (NOT O2 Sensor) to correct the P0138 or P0158 DTC condition.
^
NO - Inspect the 02 B#S2 circuit for open short or high resistance. If no trouble is found refer to TIS applicable model and model year Repair
Manual for P01381P0158 diagnosis:
3. Inspect Air Fuel Ratio Sensor for the appropriate bank.
Does the Air Fuel Ratio Sensor have an open or short on the A1A+ or A1A- wires?
^
YES - Repair the harness and revaluate the Air Fuel Ratio Sensor operation. Confirm the previous DTC(s) do not reset.
^
NO - Replace the applicable bank Air Fuel Ratio Sensor ONLY to correct the P2195/P0138 or P2197/P0158 DTC condition. Test drive the
