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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 159 (3.6L - DTCS P000A To P0157) >> DTC Troubleshooting >> P0155-O2 Sensor 2/1 Heater Performance >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2016 Dodge Journey and 2015 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
O2 SENSOR 2/1 HEATER CONTROL CIRCUIT OPEN/HIGH RESISTANCE
O2 SENSOR 2/1 HEATER GROUND CIRCUIT OPEN/HIGH RESISTANCE
O2 SENSOR 2/1
POWERTRAIN CONTROL MODULE (PCM)

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