Barometric Pressure Sensor B Circuit Intermittent/Erratic

Where it lives

For P222E, the sensor sits on the circuit this code reports. The description of P222E reports a fault at the sensor.

Check these first

• A loose or corroded barometric pressure sensor B connector
• A chafed signal wire that opens and closes with vibration
• A sensor B element that drifts as it warms up
• Water in the sensor B connector
• A weak sensor B ground

What to do next

1. Wiggle test the sensor B harness while watching live data
2. Inspect the sensor B connector for corrosion or water
3. Watch barometric sensor B data through a full warm-up
4. Compare sensor B to sensor A and the MAP reading
5. Replace barometric pressure sensor B if the signal still jumps
6. Clear the code and retest

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