P2229moderate severityPowertrain
Barometric Pressure Sensor A Circuit Range/Performance
on 2023 Chevrolet Bolt EUV 65 kWh Single Motor FWD · FWD
What this code means
The barometric pressure sensor is reading outside expected range for current conditions.
Symptoms
- Check engine light
- Poor fuel economy
- Power loss at altitude
Common causes
- Failed BARO sensor
- Sensor intake blocked
- ECM reference voltage issue
Diagnostic steps
- Compare BARO reading to known atmospheric pressure
- Check sensor connector
- Verify 5V reference
Repair notes
Replace barometric pressure sensor or repair wiring.
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