Manifold Absolute Pressure/Barometric Pressure Circuit High Input
Common Symptoms
- Check Engine Light illuminated
- Poor fuel economy
- Black smoke from exhaust
- Engine hesitation or stumbling during acceleration
- Hard starting or extended cranking
- Rough idle or stalling
Most Likely Root Causes
- Faulty MAP sensor
- Damaged or corroded wiring harness to MAP sensor
- Short to voltage in MAP sensor circuit
- Failed engine control module
- Vacuum leak at MAP sensor connection
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Component Location
The MAP sensor is typically mounted on the intake manifold or connected via a vacuum line near the throttle body.
Manufacturer Notes
Some manufacturers use integrated MAP sensors within the intake manifold assembly which may require manifold replacement if faulty.
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