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Home >> Dodge and Ram >> 2018 >> ProMaster 3500 Van Cargo >> Repair and Diagnosis >> Engine Performance >> System >> 3.6L - DTCS P0139 To P0345 >> DTC Troubleshooting >> P0153-O2 Sensor 2/1 Slow Response >> Possible Causes
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Possible Causes

Possible Causes
EXHAUST LEAK
O2 SENSOR 2/1 SIGNAL CIRCUIT
O2 SENSOR 2/1 RETURN CIRCUIT
O2 SENSOR 2/1

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

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