What Does P222E Mean?
The barometric pressure sensor 'B' signal is fluctuating or dropping out intermittently outside normal parameters. This suggests an unstable connection, failing sensor, or intermittent wiring fault.
Common Causes
40%
Intermittent connection at sensor connector (corrosion or loose terminals)
25%
Damaged wiring harness with intermittent short or open
20%
Failing barometric pressure sensor B
10%
Vibration-induced connector or wire movement causing intermittent contact
5%
Water intrusion in sensor or connector
Diagnostic Steps
1
Step 1: Inspect sensor B connector and terminals for corrosion, spread terminals, or moisture
2
Step 2: Wiggle test wiring harness and connector while monitoring live sensor data for dropouts
3
Step 3: Check for TSBs related to BARO sensor B harness routing or connector issues
4
Step 4: Monitor sensor voltage over extended drive cycle including temperature changes
5
Step 5: Replace sensor connector or repair harness if fault is reproduced; otherwise replace sensor B
Estimated Repair Cost
$120 - $450
Parts + labor, varies by vehicle and location
The barometric pressure sensor 'B' signal is fluctuating or dropping out intermittently outside normal parameters. This suggests an unstable connection, failing sensor, or intermittent wiring fault.
The most common cause of P222E (Barometric Pressure Sensor "B" Circuit Intermittent/Erratic) is: Intermittent connection at sensor connector (corrosion or loose terminals)
Typical repair costs for P222E range from $120 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Intermittent faults may cause sudden power loss or surging during driving. Safe to operate but may strand vehicle if fault becomes permanent.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P222E to identify the root cause.
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Quick Info
Category
Powertrain
System
Engine Management / Fuel Delivery
Difficulty
Type
Generic (SAE)
Recommended Tools
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