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DTC P1297: No Change In Map Sensor From Start To Run: Description

NOTE: Vehicles equipped with a 2.7L engine are equipped with a Manifold Absolute Pressure (MAP) sensor. Vehicles equipped with a 3.2L and 3.5L engine are equipped with an Intake Air Temperature/Manifold Absolute Pressure (IAT/MAP) sensor. For this test, IAT/MAP will be identified as MAP sensor.

MAP sensor signal is monitored with engine speed 400-1500 RPM with throttle plate closed. DTC will set in Powertrain Control Module (PCM) memory when PCM senses too small of a difference between barometric pressure (with ignition on) and manifold vacuum (with engine running). Possible causes for DTC to set are: defective MAP sensor, defective PCM, defective connectors or defective wiring.

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