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
(K399) O2 2/2 HEATER CONTROL CIRCUIT OPEN OR HIGH RESISTANCE
(Z902) GROUND CIRCUIT OPEN OR HIGH RESISTANCE
2/2 O2 SENSOR
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.