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 thinks the air going into the engine is too hot when the engine is cold. It's like trying to breathe hot air when you just woke up.
The engine control module (ECM) detects that the intake air temperature sensor is reading a temperature that is too high during a cold start for Bank 2.
The P103B code is triggered when the ECM detects that the intake air temperature (IAT) sensor for Bank 2 is reporting a temperature that is higher than expected during a cold start. This could be due to a faulty sensor, wiring issues, or other related problems.
• Check Engine Light is on
• Poor engine performance during cold start
• Increased fuel consumption
• Faulty intake air temperature sensor
• Wiring issues or poor connection
• Faulty ECM
ECM: Engine Control Module
IAT: Intake Air Temperature
• Use an OBD-II scanner to check for additional codes.
• Inspect the intake air temperature sensor and its wiring for damage.
• Test the sensor with a multimeter to ensure it is functioning properly.
• Replace the intake air temperature sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and clean the intake air temperature sensor.
• Ensure all electrical connections are secure.
• Perform routine engine maintenance.
Sensor Issue
• Do not ignore the Check Engine Light.
• Seek professional diagnosis if unsure.
• Avoid driving in extreme conditions until repaired.
Check with your vehicle manufacturer for warranty coverage on emission-related components.
This code has been associated with faulty sensors and wiring issues in various models, particularly in vehicles with dual banks.
Moderate – It is advisable to address this issue soon to prevent potential engine performance problems.
Driving with a malfunctioning sensor can lead to increased emissions and may not comply with local environmental regulations.
• Engine at cold start
• Ambient temperature readings
The intake air temperature sensor is typically located in the air intake duct or near the air filter housing on the engine's Bank 2 side.
Q: What does Bank 2 mean?
A: Bank 2 refers to the side of the engine opposite to Bank 1, typically where cylinder 2 is located in a V-type engine.
Q: Can I drive my car with this code?
A: It's possible to drive with this code, but it's not recommended as it can affect engine performance and fuel efficiency.
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