Possible Causes
| Possible Causes |
|---|
| (K399) O2 2/2 HEATER CONTROL CIRCUIT OPEN |
| (Z42) O2 2/2 HEATER GROUND CIRCUIT OPEN |
| O2 SENSOR HEATER ELEMENT |
| PCM |
Always perform PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.
| Possible Causes |
|---|
| (K399) O2 2/2 HEATER CONTROL CIRCUIT OPEN |
| (Z42) O2 2/2 HEATER GROUND CIRCUIT OPEN |
| O2 SENSOR HEATER ELEMENT |
| PCM |
Always perform PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.