Oxygen Sensor: Service and Repair

EXHAUST SYSTEM

Exhaust System:

CAUTION: Always replace exhaust gaskets with new ones when reassembling.
With engine running, check all tube connections for exhaust gas leaks, and entire system for unusual noises.
Check to ensure that mounting brackets and mounting insulators are installed properly and free from undue stress. Improper installation could result in excessive noise or vibration.
Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 inch) onto a hard surface such as a concrete floor; use a new one.
Before installing a new oxygen sensor, clean exhaust system threads using oxygen sensor thread cleaner tool, J-43897-18 or J-43897-12, and apply anti-seize lubricant.
GDo not overtorque the oxygen sensor. Doing so may cause damage to the oxygen sensor, resulting in the MIL coming on.