Diagnostic Trouble Code: 157
Diagnostic Trouble Code Name: Mass Air Flow (MAF) sensor circuit low input
Vehicle Make: Ford
Vehicle Model: Falcon (EL)
Diagnostic Code Entered By: ZerOne
Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Diagnostic Trouble Code Description:
Manifold Absolute Pressure Sensor Circuit Low Voltage
Possible Sensor Faults
ECM
Possible Related Diagnostic Trouble Codes
DTC P0107 or P0108 for the 2.8L, 3.0L, 3.2L, or 3.6L engine
Circuit / System Description
The manifold absolute pressure (MAP) sensor has a 5?V reference circuit, a low reference circuit, and a signal circuit. The engine control module (ECM) supplies 5?V to the MAP sensor on the 5?V reference circuit, and provides a ground for the low reference circuit. The MAP sensor provides a voltage signal to the ECM on the signal circuit relative to the intake manifold pressure changes.
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