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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 499 (2.4L - DTCS P000A To P0303) >> Diagnosis And Testing >> P0038-O2 Sensor 1/2 Heater Circuit High >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2013 Dodge Avenger and 2013 Chrysler 200. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
(K299) O2 1/2 HEATER CONTROL CIRCUIT SHORTED TO VOLTAGE
(K299) O2 1/2 HEATER CONTROL CIRCUIT OPEN OR HIGH RESISTANCE
O2 SENSOR GROUND CIRCUIT OPEN
OXYGEN SENSOR 1/2
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  STANDARD PROCEDURE  . 

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