P2251-00-O2 Sensor Negative Current Control Circuit-Open Bank 1 Sensor 1: Notes

NOTE:

The Scan Tool may display the description name of this Diagnostic Trouble Code differently with the following below:

P2251-00 - O2 SENSOR 1/1 NEGATIVE CURRENT CONTROL CIRCUIT/OPEN

For a complete CATALYST MONITOR SYSTEM wiring diagram, refer to the appropriate Wiring Information .