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 is getting a low signal from the sensor that checks the temperature of the air going into the engine on one side of the engine. It's like the sensor is saying it's really cold when it shouldn't be.
The P00AC code indicates that the signal from the intake air temperature (IAT) sensor is lower than expected on bank 2, which is one side of the engine.
The IAT sensor measures the temperature of the air entering the engine. This data is used by the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion. A low circuit signal suggests that the sensor is reporting a temperature that is too low, which may affect engine performance.
• Check Engine Light is on
• Poor engine performance
• Increased fuel consumption
• Faulty intake air temperature sensor
• Wiring issues such as short circuits or poor connections
• Faulty engine control module (ECM)
IAT: Intake Air Temperature
ECM: Engine Control Module
• Use an OBD-II scanner to confirm the code
• Inspect the IAT sensor and its wiring for damage
• Test the sensor's resistance and voltage
• Replace the intake air temperature sensor
• Repair or replace damaged wiring
• Reprogram or replace the ECM if necessary
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain sensor connections
• Keep the engine bay clean to prevent debris buildup
• Schedule regular vehicle maintenance
Sensor Issue
• Check for any loose or damaged wires around the sensor
• Consider taking the vehicle to a professional mechanic for diagnosis
Check with your vehicle manufacturer for specific warranty coverage on sensors and electronic components.
This code has been present in OBD-II systems since the introduction of more advanced engine management systems that rely on precise air-fuel mixture control.
Moderate – While the vehicle can still operate, ignoring this issue may lead to decreased fuel efficiency and engine performance.
Driving with a malfunctioning sensor can lead to increased emissions and may not comply with emissions regulations.
• Engine at operating temperature
• Vehicle parked and engine off
The intake air temperature sensor is typically located in the air intake duct or on the intake manifold of the engine on bank 2.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to poor fuel economy and reduced engine performance.
Q: Can I drive my car with a P00AC code?
A: Yes, but it's advisable to fix the issue soon to avoid potential engine performance problems.
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