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P0156 Diagnostic Trouble Code Discussion for April 2013

Heated Oxygen Sensor (Bank 2 Sensor 2) Closed Loop Fuel Control

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Trouble Ticket Help Requests for DTC P0156
Help Request Posted
2004 Jeep Liberty Renegade 3.7L Poor Idle Quality, MIL Lamp on
P0156: history code repaired previously and cleared. I am thinking this has a shorted harness on truck or fuse panel. Tps signal return wire with tps disconnected has 3.7 volts on it coming from ecm. Ground and signal return go directly to ecm no splices 5 volt reference shart via splice with crank sensor. Map s...
April 30, 2013