Common Symptoms
- Check engine light illuminated
- Intermittent poor acceleration or hesitation
- Slightly reduced fuel economy
- Rough idle at higher altitudes
- Engine may run rich or lean unpredictably
Most Likely Root Causes
- Damaged or corroded wiring harness to barometric pressure sensor
- Intermittent connector issue at sensor or ECM
- Faulty barometric pressure sensor developing internal fault
- Poor ground connection for sensor circuit
- Water intrusion or corrosion at sensor connector
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Component Location
Barometric pressure sensor is typically integrated into the intake manifold absolute pressure sensor or mounted separately on the engine intake system.
Manufacturer Notes
Some manufacturers integrate barometric pressure sensing within the manifold absolute pressure sensor using periodic atmospheric sampling.
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