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 when you start your car, the computer thinks the air going into the engine is too cold. It's like the car is saying, 'Brrr, it's too chilly!'
The vehicle's engine control module (ECM) detects that the intake air temperature is lower than expected during a cold start condition for Bank 1.
The P105D code is triggered when the ECM detects that the intake air temperature sensor is reading a temperature lower than the expected threshold during a cold start. This can affect the air-fuel mixture and engine performance, especially during the initial startup phase.
• Check Engine Light illuminated
• Poor engine performance during cold start
• Increased fuel consumption
• Faulty intake air temperature sensor
• Wiring issues or poor connections in the sensor circuit
• ECM software issue or calibration error
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
• Verify the code with an OBD-II scanner.
• Inspect the intake air temperature sensor and wiring for damage.
• Test the sensor's resistance and compare it to specifications.
• Replace the faulty intake air temperature sensor.
• Repair or replace damaged wiring or connectors.
• Update the ECM software if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regularly inspect and maintain the intake air temperature sensor.
• Ensure all electrical connections are secure and free from corrosion.
• Keep the ECM software updated.
Sensor Issue
• Have the vehicle inspected by a professional if the Check Engine Light is on.
• Avoid prolonged driving if the engine is not running smoothly during startup.
Check with the vehicle manufacturer for specific warranty coverage on sensors.
This code has been more prevalent in colder climates where intake air temperatures can drop significantly.
Moderate – It's important to address this issue to prevent poor engine performance and increased emissions.
Driving with a malfunctioning sensor can lead to increased emissions and may not comply with local emissions regulations.
• Cold start the vehicle after it has been sitting overnight.
• Ensure ambient temperature is within expected range for accurate diagnosis.
The intake air temperature sensor is typically located in the air intake duct or near the air filter housing.
Q: Can I drive with a P105D code?
A: While the car may still run, it's best to address the issue to avoid poor performance and increased emissions.
Q: How do I reset the Check Engine Light after repairs?
A: Use an OBD-II scanner to clear the code, or disconnect the battery for a few minutes.
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