What Does P222F Mean?
The readings from barometric pressure sensor 'A' and sensor 'B' do not agree within acceptable tolerances. The PCM has detected a discrepancy between the two sensor readings that exceeds calibrated limits.
Common Causes
40%
One BARO sensor drifted out of calibration or failing
25%
Vacuum leak or pressure leak affecting one sensor
15%
Plugged or restricted sensing port on one sensor
12%
Wiring issue causing incorrect reading on one sensor circuit
8%
Software calibration issue requiring PCM update
Diagnostic Steps
1
Step 1: Compare live data readings from both BARO sensors A and B (should be within 2-5 kPa typically)
2
Step 2: Visually inspect both sensors for physical damage or blockage of sensing ports
3
Step 3: Cross-reference readings with known altitude or portable BARO reference
4
Step 4: Check for intake leaks or sensor mounting issues affecting pressure readings
5
Step 5: Replace the sensor showing the most deviation from expected barometric pressure for current altitude
Estimated Repair Cost
$150 - $500
Parts + labor, varies by vehicle and location
The readings from barometric pressure sensor 'A' and sensor 'B' do not agree within acceptable tolerances. The PCM has detected a discrepancy between the two sensor readings that exceeds calibrated limits.
The most common cause of P222F (Barometric Pressure Sensor "A"/"B" Correlation) is: One BARO sensor drifted out of calibration or failing
Typical repair costs for P222F range from $150 to $500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Engine performance may be degraded as PCM cannot determine correct atmospheric pressure. Generally safe to drive but performance will suffer.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P222F 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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