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Home >> Fiat >> 2019 >> 500L Trekking >> Repair and Diagnosis >> Engine Performance >> System >> 1.4L - DTCS P2123-00 To U1463-00 >> DTC Troubleshooting >> P2237-00-O2 Sensor 1/1 Pump Cell Current Circuit/Open >> Possible Causes

Possible Causes

Possible Causes
O2 SENSOR 1/1 POSITIVE CURRENT CONTROL CIRCUIT OPEN OR HIGH RESISTANCE
O2 SENSOR
POWERTRAIN CONTROL MODULE (PCM)

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

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