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 having trouble understanding the air pressure outside. It's like when you can't figure out if it's going to rain or not because the weather is confusing.
The vehicle's engine control module (ECM) is detecting an issue with the barometric pressure sensor's readings, which don't match expected values.
The P1247 code is triggered when the ECM detects a discrepancy between the barometric pressure sensor readings and expected atmospheric pressure values. This can affect engine performance as the ECM uses this data to adjust fuel and air mixtures.
• Check Engine Light is on
• Poor engine performance
• Reduced fuel efficiency
• Faulty barometric pressure sensor
• Wiring issues or poor electrical connections
• Faulty ECM
ECM: Engine Control Module, the computer that controls engine functions.
Barometric Pressure Sensor: A device that measures atmospheric pressure to help the engine adjust air-fuel mixtures.
• Use an OBD-II scanner to confirm the code.
• Inspect the barometric pressure sensor and its wiring.
• Test the sensor and replace if faulty.
• Replace the barometric pressure sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$100 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain sensors.
• Ensure electrical connections are secure.
• Keep the ECM updated with the latest software.
Sensor Issue
• Have the vehicle inspected by a professional.
• Avoid driving in extreme weather conditions until fixed.
Check with your manufacturer for warranty coverage on sensors and ECM.
This code has been more common in vehicles with aging sensors or those exposed to harsh environments.
Moderate – It should be addressed soon to prevent further engine issues.
Driving with a faulty sensor may lead to increased emissions, which can be illegal in some areas.
• Vehicle at normal operating temperature
• Engine idling
The barometric pressure sensor is usually located near the air intake system or integrated with the mass airflow sensor.
Q: Can I drive with a P1247 code?
A: It's possible, but not recommended as it may affect engine performance and fuel efficiency.
Q: How do I reset the check engine light after fixing the issue?
A: Use an OBD-II scanner to clear the code after repairs are completed.
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