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 a sensor in your car that measures air pressure outside is not working right. It's saying the pressure is too low.
The P227C code is triggered when the Powertrain Control Module (PCM) detects a low voltage signal from the Barometric Pressure Sensor C. This sensor is responsible for measuring atmospheric pressure.
The Barometric Pressure Sensor C provides the PCM with information about the atmospheric pressure, which is crucial for determining the air density and calculating the optimal air-fuel mixture for combustion. A low circuit signal indicates that the sensor may be malfunctioning or there is an issue with the wiring or connections.
• Check Engine Light is on
• Poor engine performance
• Increased fuel consumption
• Faulty Barometric Pressure Sensor C
• Wiring issues or poor connections
• Faulty PCM
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the P227C code.
• Inspect the wiring and connections to the Barometric Pressure Sensor C.
• Test the sensor with a multimeter to check for proper voltage.
• Replace the Barometric Pressure Sensor C if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• OBD-II Scanner
• Multimeter
• Screwdriver set
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect sensor connections.
• Keep the engine bay clean to prevent dirt buildup.
• Perform regular vehicle maintenance checks.
Sensor Issue
• Do not ignore the Check Engine Light.
• Seek professional help if unsure about repairs.
Check your vehicle's warranty for coverage on sensors and electronic components.
This code has been associated with vehicles that have experienced sensor degradation due to environmental factors.
Moderate – It should be addressed soon to avoid further engine performance issues.
Driving with a malfunctioning sensor may lead to increased emissions and reduced fuel efficiency.
• Ensure the vehicle is on a level surface.
• Perform tests in a controlled environment to avoid false readings.
The Barometric Pressure Sensor is typically located in the intake manifold area or near the air filter housing.
Q: Can I drive with a P227C code?
A: It's not recommended to drive for extended periods with this code as it can affect engine performance.
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 after repairs are completed.
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