Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means the car's computer is getting a reading from a sensor that measures air pressure outside the car, and the reading is too high.
The P2229 code indicates that the signal from the Barometric Pressure Sensor is higher than expected by the engine control module (ECM).
The Barometric Pressure Sensor provides the ECM with information about the atmospheric pressure. This data is crucial for the ECM to adjust the air-fuel mixture and ignition timing. A 'Circuit High' condition means the sensor is sending a voltage signal that is higher than the acceptable range, suggesting a possible sensor malfunction or wiring issue.
• Check Engine Light is on
• Poor engine performance
• Reduced fuel efficiency
• Faulty Barometric Pressure Sensor
• Wiring issues such as short to voltage
• Faulty ECM
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, second generation
• Use an OBD-II scanner to confirm the code.
• Inspect the Barometric Pressure Sensor and its wiring for damage.
• Test the sensor's voltage and compare it to the manufacturer's specifications.
• Replace the Barometric Pressure Sensor if faulty.
• Repair or replace damaged wiring.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Honda Accord
• Regularly inspect sensors and wiring.
• Keep the engine bay clean to prevent sensor damage.
• Perform regular vehicle maintenance.
Sensor Issue
• If the Check Engine Light is on, have the vehicle inspected as soon as possible.
• Avoid driving in extreme weather conditions until the issue is resolved.
Check with the vehicle manufacturer for specific warranty coverage on sensors.
This code has been known to appear in vehicles with high mileage or in regions with extreme weather conditions.
Moderate – It should be addressed soon to avoid potential engine performance issues.
Driving with a faulty sensor may lead to increased emissions, which could be against local environmental regulations.
• Ensure the vehicle is at operating temperature.
• Perform tests in a controlled environment to avoid external pressure changes.
The Barometric Pressure Sensor is typically located on or near the intake manifold or air filter housing.
Q: Can I drive with a P2229 code?
A: While the vehicle may still be drivable, it's recommended to fix the issue soon to prevent further problems.
Q: How do I reset the Check Engine Light after fixing the issue?
A: You can use an OBD-II scanner to clear the code, or disconnect the battery for a few minutes to reset the system.
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Fitment Required · Vehicle-fitment part
Commonly relevant for misfire, ignition-efficiency, and some drivability-related repairs.
Misfire and ignition-related faults commonly involve spark plugs as part of the repair path.
Check the correct plug type, gap, and engine application for your vehicle.
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Fitment Required · Vehicle-fitment part
Relevant when the fault points toward ignition-coil performance or cylinder-specific ignition issues.
Some ignition faults involve coil performance or cylinder-specific coil problems.
Match the coil to your engine and confirm the failed component before ordering.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.