Possible Causes
| Possible Causes |
|---|
| (K399) O2 2/2 HEATER CONTROL CIRCUIT |
| (Z902) O2 2/2 HEATER GROUND CIRCUIT |
| O2 SENSOR HEATER ELEMENT |
| PCM |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.
| Possible Causes |
|---|
| (K399) O2 2/2 HEATER CONTROL CIRCUIT |
| (Z902) O2 2/2 HEATER GROUND CIRCUIT |
| O2 SENSOR HEATER ELEMENT |
| PCM |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.