Possible Causes
| Possible Causes |
| INTERMITTENT DTC |
| (K399) O2 2/2 HEATER CONTROL CIRCUIT OPEN OR HIGH RESISTANCE |
| (Z902) GROUND CIRCUIT OPEN OR HIGH RESISTANCE |
| 2/2 OXYGEN SENSOR |
| POWERTRAIN CONTROL MODULE (PCM) |
Perform *PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE
.