Oxygen Sensor Relay: Locations

The oxygen sensor relay is located in the relay box affixed to the right front wheel housing.

a = DME main relay
c = Oxygen sensor relay
1 = Fuel pump relay 1 (cyl. 1-6)
2 = Fuel pump relay 2 (cyl. 7-12)

NOTE: Depending on the model, the installation for the relays may differ. When in doubt, extract different relays to check whether the desired function-interrupt has been achieved.