LEMON Manuals: Even more car manuals for everyone
Home >> Fiat >> 2014 >> 500c Pop, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> 1.4L - I4 Non-Turbo - DTCS P0016-00 To P0354-00 - 500 & 500C >> Diagnosis And Testing >> P0138-00-O2 Sensor 1/2 Circuit High >> Possible Causes

Possible Causes

Possible Causes
(K141) O2 SENSOR 1/2 SIGNAL CIRCUIT SHORTED TO VOLTAGE
(K904) O2 SENSOR RETURN CIRCUIT SHORTED TO VOLTAGE
(K141) O2 SENSOR 1/2 SENSOR SIGNAL CIRCUIT OPEN/HIGH RESISTANCE
(K904) O2 SENSOR RETURN CIRCUIT OPEN/HIGH RESISTANCE
O2 SENSOR
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

scientia non olet · About LEMON Manuals