October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
Possible Causes
| Possible Causes |
| INTERMITTENT DTC |
| (K243) O2 2/2 SIGNAL CIRCUIT SHORTED TO VOLTAGE |
| (K904) O2 RETURN (DOWN) CIRCUIT SHORTED TO VOLTAGE |
| (K243) O2 2/2 SIGNAL CIRCUIT SHORTED TO THE (K399) O2 2/2 HEATER CONTROL CIRCUIT |
| (K243) O2 2/2 SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE |
| (K904) O2 RETURN (DOWN) CIRCUIT OPEN OR HIGH RESISTANCE |
| 2/2 OXYGEN SENSOR |
| POWERTRAIN CONTROL MODULE (PCM) |
Perform *PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE
.