Barometric Pressure Sensor B Circuit Range/Performance

Where it lives

For P222B, the description names the sensor as the part involved.

Check these first

• A barometric pressure sensor B reading outside its expected range
• A blocked or debris fouled sensor B vent
• Water ingress into the sensor B housing
• A vacuum or intake leak skewing sensor B readings

What to do next

1. Read barometric pressure sensor B voltage on a scan tool
2. Compare the sensor B reading to a known barometric value
3. Check the sensor B vent for blockage or debris
4. Inspect the sensor B housing and connector for water
5. Replace barometric pressure sensor B if the reading stays off
6. Clear the code and retest

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