0600

0600-O2 SENSOR UPSTREAM CONNECTORS MAY BE REVERSED





For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
Engine running.

- Set Condition:
Down stream O2 sensors respond to other bank O2 sensor changes.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Initial Inspection and Diagnostic Overview

1. OTHER DTC'S
Ignition on, engine not running.
With the scan tool, read DTC's.
Are their any other O2 sensor related DTC's

Yes

- Repair all other O2 sensor related DTC's first.

No

- Go To 2

Diagnostic Test

2. O2 SENSOR HARNESS CONNECTORS SWAPPED
Use the wiring diagram above to determine if the O2 sensor connectors are swapped by comparing wire colors.
Are the connectors swapped?

Yes

- Swap the connectors back.
- Perform POWERTRAIN VERIFICATION TEST.Powertrain Verification Test

No

- Go To 3

3. O2 SENSORS
Turn the ignition off.
Replace all 4 O2 sensors.
Ignition on, engine not running.
With the scan tool, erase DTC's.
Start the engine.
Test drive vehicle for 5 miles.
Ignition on, engine not running.
With the scan tool, read DTC's.
Did the DTC return?

Yes

- Replace and program the Powertrain Control Module Testing and Inspection

No

- Repair complete.
- Perform POWERTRAIN VERIFICATION TEST.Powertrain Verification Test