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P0157 Diagnostic Trouble Code Discussion for July 2010

Heated Oxygen Sensor (Bank 2 Sensor 2) Circuit Low Voltage

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Trouble Ticket Help Requests for DTC P0157
Help Request Posted
1994 Ford Ranger XLT 4.0L Hesitation, Cuts out, Stall, MIL Lamp on VIN: 1FTCR14X2R
P0157: Mass air flow low voltage. Guys, this vehicle literally limped into shop. check engine light on, pops back constantly under acceleration, it had 2 air flow codes and a lean code. Under acceleration injector pulse width goes to the max and oxygen sensors go very lean. We replaced the ai...
July 02, 2010