Verifying Post Oxygen Sensor Connection After Repair (GROUP 01, NO. 00-03)

WARNING: This page is about the A6 Quattro, 2.7 D, Automatic, which is a different variant/trim than selected.

Publication date: 2000-08-07
Reference number: GROUP 01, NO. 00-03

VERIFYING POST OXYGEN SENSOR CONNECTION AFTER REPAIR

TECHNICAL SERVICE BULLETIN

Reference Number(s): GROUP 01, NO. 00-03, Date of Issue: August 7, 2000

OBDII DIAGNOSTIC TIPS, VERIFYING POST OXYGEN SENSOR, CONNECTIONS AFTER REPAIRS

Model(s): 1996-on Audi, All With V6 or V8 Engines with 2 Post Oxygen Sensors

Group: 01 - On-Board Diagnostic

Bulletin No.: 00-03

Date: August 7, 2000

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!