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 thinks the air going into the engine is too cold when the car is starting up, especially on one side of the engine.
The engine control module (ECM) monitors the temperature of the air entering the engine. If it detects that the temperature is too low during a cold start, it triggers the P1165 code.
P1165 indicates that the ECM has detected a charge air temperature that is below the expected range during a cold start condition for Bank 2. This could be due to a faulty sensor, wiring issues, or actual low air temperature.
• Check Engine Light is on
• Poor engine performance during cold starts
• Increased fuel consumption
• Faulty charge air temperature sensor
• Wiring issues or poor electrical connections
• Actual low ambient temperatures
ECM: Engine Control Module
Bank 2: The side of the engine opposite Bank 1, usually on V-type engines
• Verify the Check Engine Light and retrieve the code using an OBD-II scanner.
• Inspect the charge air temperature sensor and its wiring for damage or disconnection.
• Measure the air temperature and compare it with the sensor reading.
• Replace the faulty charge air temperature sensor.
• Repair or replace damaged wiring or connectors.
• Ensure the sensor is properly calibrated.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Honda Accord
• Nissan Altima
• Toyota Camry
• Regularly inspect and maintain sensors and wiring.
• Ensure proper engine warm-up procedures.
• Keep the vehicle in a garage during extremely cold weather.
Sensor Issue
• Have the vehicle inspected by a professional if the Check Engine Light is on.
• Avoid driving the vehicle hard until the issue is resolved.
Check with the vehicle manufacturer for specific warranty coverage related to the emissions system.
This code is often associated with vehicles operating in very cold climates and can be triggered by actual environmental conditions.
Moderate – It should be addressed soon to prevent further engine performance issues.
Driving with a malfunctioning sensor can lead to increased emissions and may not comply with local emission laws.
• Cold start conditions
• Ambient temperature below freezing
The charge air temperature sensor is typically located in the intake manifold or air intake duct on Bank 2.
Q: Can I drive my car with a P1165 code?
A: It's possible, but not recommended as it may affect engine performance and fuel efficiency.
Q: How can I prevent this code from appearing?
A: Regular maintenance and ensuring the vehicle is properly warmed up can help prevent this issue.
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