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 computer in your car is seeing a difference between the outside air temperature and the air temperature going into the engine. It's like if you were expecting a cold breeze but felt warm air instead.
The engine control module (ECM) detects a discrepancy between the ambient air temperature and the intake air temperature.
The P101F code is triggered when the ECM identifies a correlation issue between the ambient air temperature sensor and the intake air temperature sensor. These sensors are used to measure the temperature of the air outside the vehicle and the air entering the engine, respectively. If the readings from these sensors are not within a specified range of each other, the ECM sets this code.
• Check Engine Light is on
• Poor fuel economy
• Reduced engine performance
• Faulty ambient air temperature sensor
• Faulty intake air temperature sensor
• Wiring issues or poor connections
ECM: Engine Control Module, the computer that controls engine functions.
Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.
• Use an OBD-II scanner to confirm the code.
• Inspect the ambient air temperature sensor and its wiring.
• Inspect the intake air temperature sensor and its wiring.
• Replace the ambient air temperature sensor if faulty.
• Replace the intake air temperature sensor if faulty.
• Repair or replace damaged wiring or connectors.
• OBD-II scanner
• Digital multimeter
• Basic hand tools
$100 - $300
Moderate
• Chevrolet Silverado
• Ford F-150
• Toyota Camry
• Regularly inspect sensors and wiring for damage.
• Keep the engine bay clean to prevent sensor contamination.
• Perform regular vehicle maintenance checks.
Sensor Issue
• Don't ignore the Check Engine Light; get a diagnosis soon.
• Consider professional help if you're not comfortable with car repairs.
Check if your vehicle's warranty covers sensor replacements.
This code has been more common in vehicles with aging sensors or those exposed to harsh environmental conditions.
Moderate – It should be addressed soon to prevent further issues.
Driving with a Check Engine Light can lead to further damage and may not be safe.
• Vehicle should be at operating temperature.
• Test in a controlled environment to avoid external temperature fluctuations.
The ambient air temperature sensor is usually located near the front grille, while the intake air temperature sensor is typically located in the air intake duct.
Q: Can I drive with a P101F code?
A: It's not recommended to drive for an extended period with this code as it can affect engine performance.
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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