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DTC P1408: Manifold Absolute Pressure (Map) Sensor Circuit Malfunction: Condition

DTC is set when Power Control Module (PCM) detects MAP sensor output voltage for predetermined amount of time with engine at operating temperature and running, and incorrect throttle opening voltage of more than 4.6 volts or less than .2 volt. MIL is illuminated when PCM detects malfunction during 2 consecutive drive cycles. Possible causes are:

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