Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Jeep >> 2005 >> Grand Cherokee Limited, 5.7 2 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - DTCS P0016 To P0118, Diagnostic Code Index, Pre-Diagnostic Troubleshooting, Intermittent Condition >> Diagnosis And Testing >> P0038-O2 Sensor 1/2 Heater Circuit High >> Possible Causes

Possible Causes

Possible Causes 
(K299) O2 1/2 HEATER CONTROL CIRCUIT OPEN
(Z42) O2 1/2 HEATER GROUND CIRCUIT OPEN
(K299) O2 SENSOR 1/2 HEATER CONTROL CIRCUIT SHORTED TO BATTERY VOLTAGE
O2 SENSOR
PCM

Always perform the  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE   before proceeding. 

scientia non olet · About Mike's Workshop Manuals