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P0097 Code – What Does It Mean & How To Fix It

This is one of the most frequent OBD2 trouble codes. Read the full article below to know what it means, how to fix it, and what other codes may show related to it.


P0097 is an OBDII error code indicating a problem with the Intake Air Temperature Sensor 2, Circuit Low Input. An essential component that provides the engine control module with information on the temperature of the incoming air is the Intake Air Temperature Sensor IAT.


When an unusual low voltage signal from the Intake Air Temp Sensor 2 is detected by a Powertrain Control Module Unit, PN0097 shall be triggered. To optimize performance, the PCM is relying on this sensor’s information to adjust its air-fuel mixture, ignition timing, and other engine parameters.


The P0097 code can be activated for a variety of reasons, such as:

  • A malfunctioning or damaged intake air temperature sensor may give inaccurate temperature measurements and result in a low voltage signal.
  • Wire Problems: The IAT sensor’s signal might be disrupted, and a low input might result from corroded or damaged wires and connections.
  • Sensor Position: The IAT sensor might provide erroneous readings and set off the code if it is mounted too near the engine or in a place where it is exposed to extreme heat.
  • PCM Malfunction: A malfunctioning PCM might lead to inaccurate readings from the IAT sensor and activate P0097.


You could encounter the following signs and symptoms when the P0097 code is present:

  • The Check Engine Light Is On: The check engine light on the dashboard of the car is the first obvious sign.
  • Diminished Engine Performance: Due to incorrect air-fuel mixture changes, the engine may show diminished power and performance.
  • Poor Fuel Efficiency: Poor fuel efficiency can be caused by inaccurate sensor readings that result in inefficient fuel burning.


An OBD-II scanner or a certified mechanic must follow a step-by-step procedure to properly diagnose the P0097 error code. Typically, the diagnosis entails:

  • Code Reading: Using an OBD-II scanner, retrieve the P0097 code and any associated codes.

Visual Inspection: Look for any rust or obvious damage in the wiring and connections of the IAT sensor.

  • Sensor testing: Check the resistance and voltage output of the IAT sensor to see if it complies with the manufacturer’s requirements.
  • Check for PCM Issues: Examine the PCM and its connections for any potential problems.

Common mistakes

Dealing with the P0097 error code might result in blunders like these:

  • Ignoring the Code: Ignoring the P0097 code and the check engine light might cause the engine to run less efficiently and perhaps endanger other engine parts.
  • Replacing the Sensor Without Proper Testing: If the fundamental cause is elsewhere, replacing the IAT sensor without first confirming its operation might result in excessive costs.
  • Ignoring Wiring Problems: Failing to search for corroded or broken wiring might lead to incorrect identification of the issue.

How serious is this?

The P0097 code must not be disregarded, as it will not lead to an immediate breakdown of the vehicle. The prolonged lack of attention may result in engine performance deterioration, decreased fuel efficiency, or possible damage to other parts of the engine.

What repairs can fix the code?

repair manuals

Possible fixes for the P0097 error code include:

  • Replacing the Intake Air Temperature Sensor: If the present IAT sensor is broken or defective, install a new one.
  • Fixing or replacing the wiring and connectors: Take care of any wiring and connection problems with the IAT sensor.
  • Moving the IAT Sensor: If the sensor’s placement results in poor readings, think about moving it to a better spot.
  • PCM Reprogramming or Replacement: If the PCM is malfunctioning, reprogramming or replacing it may be necessary.

Related codes

Other related codes that may accompany or be triggered by P0097 include:

  • P0096 – Intake Air Temperature Sensor 2 Circuit Range/Performance
  • P0098 – Intake Air Temperature Sensor 2 Circuit High Input


Finally, the P0097 DTC code indicates that there is a potential problem with the Intake Air Temperature Sensor 2 circuit’s low input. This problem will help to maintain optimum engine performance, fuel efficiency, and total vehicle reliability by being fixed in a timely manner. Seek the assistance of a qualified technician to diagnose the root cause accurately and perform the necessary repairs if you encounter a check engine light with a P0097 code.

You can take steps to ensure the smooth and efficient operation of your vehicle by learning what it means, causes, symptoms, or possibilities for resolving the P0097 code. The key to prolonging the life of your car and ensuring that more serious problems don’t occur later is constant maintenance and timely repairs.

P0097 Code – What Does It Mean & How To Fix It