Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent
Common Symptoms
- Check Engine Light illuminated
- Rough or unstable idle
- Poor acceleration or hesitation during throttle application
- Engine stalling at idle or when decelerating
- Poor fuel economy
- Black smoke from exhaust under load
Most Likely Root Causes
- Intermittent MAP sensor electrical connection or corroded connector
- Damaged or chafed wiring harness to MAP sensor
- Failing MAP sensor with intermittent internal fault
- Vacuum leak at MAP sensor hose or connection
- Poor ground connection at MAP sensor or ECM
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Component Location
MAP sensor is typically mounted on the intake manifold or connected via vacuum hose near the throttle body.
Manufacturer Notes
Intermittent MAP sensor codes are often caused by connector terminal corrosion or wiring chafing against engine components during vibration.
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