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Home >> Fiat >> 2019 >> 500L Trekking >> Repair and Diagnosis >> Engine Performance >> System >> 1.4L - DTCS P0016-00 To P0270-00 >> DTC Troubleshooting >> P0038-00-O2 Sensor 1/2 Heater Circuit High >> Possible Causes

Possible Causes

Possible Causes
O2 SENSOR 1/2 HEATER CONTROL CIRCUIT SHORTED TO VOLTAGE
OXYGEN SENSOR 1/2
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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