Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is getting a weak signal from a sensor that measures the air pressure outside. It's like if you had a weather station and the barometer was not working right.
The P222C code indicates that the signal from the Barometric Pressure Sensor B is lower than expected by the vehicle's engine control module (ECM).
The Barometric Pressure Sensor B is responsible for measuring the atmospheric pressure. This data is used by the ECM to adjust the air-fuel mixture for optimal engine performance. A low circuit signal suggests a possible issue with the sensor itself, its wiring, or the ECM.
• Check Engine Light illuminated
• Poor engine performance
• Increased fuel consumption
• Faulty Barometric Pressure Sensor B
• Wiring issues or poor connections in the sensor circuit
• Faulty Engine Control Module (ECM)
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Inspect the Barometric Pressure Sensor B and its wiring for damage.
• Use a multimeter to test the sensor's voltage and ground connections.
• Check the ECM for any additional error codes.
• Replace the Barometric Pressure Sensor B if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain sensor connections.
• Keep the engine compartment clean to avoid sensor contamination.
• Schedule periodic vehicle diagnostics.
Sensor Issue
• Do not ignore the Check Engine Light; have it diagnosed promptly.
• Consult with a professional mechanic if unsure about the repair.
Check with your vehicle manufacturer for warranty coverage on sensors.
This code has been associated with sensor failures in various models, often due to environmental exposure.
Moderate – While the vehicle may still be drivable, it could lead to increased fuel consumption and poor performance.
Driving with a faulty sensor can lead to emissions violations and potential safety issues.
• Engine running
• Stable atmospheric conditions
The Barometric Pressure Sensor B is typically located in the engine bay, often near the intake manifold or firewall.
Q: Can I drive with a P222C code?
A: While you can drive with this code, it's not recommended as it can lead to poor fuel economy and performance.
Q: How can I reset the Check Engine Light?
A: You can reset the light using an OBD-II scanner after fixing the issue, or by disconnecting the battery for a few minutes, though this is not recommended as it may erase other important data.
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