Optima L4-2.4L (2001)
2.
Open hood, disconnect bank 2 sensor 1 connector at front corner of left cylinder head and remove connector from bracket.
3.
Disconnect bank 1 sensor 1 connector at rear corner of right cylinder head and remove connector from bracket.
4.
Raise vehicle on hoist and using suitable 02 sensor socket, remove both front (pre-catalyst) oxygen sensors.
5.
Install new oxygen sensors, black wire sensor on bank 1 (firewall side) and gray wire sensor on bank 2 (radiator side). Torque to 29 - 36 lb-ft (40 -
50 Nm).
6.
Lower vehicle and reconnect sensor connectors, reinstall connectors onto brackets.
REPROGRAMMING PROCEDURE:
* NOTICE
Clear any stored diagnostic trouble codes before reprogramming ECM.
