Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is saying that the air going into the engine is too hot. It's like when you try to breathe in on a really hot day and it feels too warm.
The engine control module (ECM) has detected that the intake air temperature sensor 2 on bank 1 is reading a temperature that is higher than expected.
The P11B3 code is triggered when the ECM detects that the intake air temperature sensor 2 on bank 1 is reporting a temperature that exceeds the predetermined threshold. This sensor is responsible for monitoring the temperature of the air entering the engine, and a high reading could indicate a problem with the sensor itself, the wiring, or the actual air temperature.
• Check Engine Light illuminated
• Poor engine performance
• Reduced fuel efficiency
• Faulty intake air temperature sensor
• Wiring issues or poor electrical connections
• Heat soak from nearby engine components
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the intake air temperature sensor and its wiring.
• Check for any heat sources affecting the sensor.
• Replace the intake air temperature sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Ensure proper heat shielding around the sensor.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $250
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect sensors and wiring.
• Ensure proper engine cooling.
• Avoid excessive engine heat soak.
Sensor Issue
• Avoid driving in extremely hot conditions if possible.
• Regularly maintain your vehicle's cooling system.
Check with your vehicle manufacturer for warranty coverage on sensors.
This code is relatively common in vehicles with aging sensors or those exposed to high heat conditions.
Moderate – Addressing this issue can prevent further engine performance problems.
Driving with a faulty sensor can lead to increased emissions and reduced fuel efficiency.
• Engine at operating temperature
• Vehicle in a controlled environment
The intake air temperature sensor is typically located in the air intake duct or manifold.
Q: Can I drive with this code?
A: It's possible, but not recommended as it can lead to poor engine performance.
Q: How do I reset the code?
A: Use an OBD-II scanner to clear the code after addressing the issue.
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