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P0131 Diagnostic Trouble Code Discussion for February 2019

Air Fuel Sensor (Bank 1 Sensor 1) Circuit Low Input (Lean Shift)


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Trouble Ticket Help Requests for DTC P0131
Help Request Posted
2004 Mercedes-Benz C240 2.6L No Start, long crank to start VIN: WDBRF61J34
P0131: O2 signal low bank 1. The engine is very hard to start when cold. It requires very long crank and eventually will starts. It seems to help a little bit when applying gas pedal but still very hard to start. The fuel pressure is 55 psi, coolant and air charge temperature is about...
February 11, 2019