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P0156 Diagnostic Trouble Code Discussion for December 2016

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
2000 Ford F-150 Lariat 5.4L Poor Idle Quality, Surge, MIL Lamp on VIN: 1FTRX18L2Y
P0156: Circut malfunction bank2 sensor2. 2000 F 150 Idles rough surges like a vaccum leak found no leaks vaccum good at an idle. My question is why does my long term fuel trim stay at zero, when all my O2 sensors are, running low at an idle, even when driving long term fuel trim never changes, if you...
December 07, 2016