Oxygen Sensor - Verifying Connections After Repairs
Group: 01Number: 00-03
Date: Aug. 7, 2000
Subject:
OBDII Diagnostic Tips, Verifying Post Oxygen Sensor,
Connections after Repairs
Model(s):
All V6 or V8 Engines 1996-->
with - 2 Post Oxygen Sensors
Service
During any repair that requires removing both post oxygen sensors or disconnecting their leads from the wiring harness:
- Mark both left and right post oxygen sensors and wiring harness leads prior to disconnecting and removing.
After installing the post oxygen sensors or when reconnecting harness leads to the oxygen sensors:
- Always! ensure that the correct post oxygen sensor lead is connected to the correct wiring harness connector.
- Always! ensure that the sensor is in the correct exhaust pipe.
CAUTION!
While making repairs, failure to connect right and left post oxygen sensor leads to the correct right and left wiring harness connectors can cause an increase in exhaust emissions!