Diagnostic Test

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1) CHECK FOR CURRENT DTC
Turn the ignition on.

With the scan tool, read PCM DTCs.

Is this DTC present?

Yes
1. For complete diagnosis of this DTC, refer to P0131-O2 SENSOR 1/1 CIRCUIT LOW .
No
1. Go to 2).
2) INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.

NOTE: Check connectors - Clean/repair as necessary. Poor pin to terminal connections can set DTCs.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors specific to this DTC. Wiggle the wires while checking for shorts and open circuits.

NOTE: Check for any Technical Service Bulletins that may apply.

Were there any problems found?

Yes
1. Repair as necessary.
2. Perform POWERTRAIN VERIFICATION TEST - VER 2 .
No
1. The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for a possible intermittent condition.