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P0097 is a diagnostic trouble code (DTC) for "Intake Air Temperature Sensor 2 Circuit Low Input". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
Intake Air Temperature Sensor 2 Circuit Low Input
P0097 is the OBD-II generic code indicating the engine control module (ECM) has determined that the intake air temperature sensor 2 (IAT2) input is lower than the normal sensor range. This typically indicates that there is an electrical short.
The intake air temperature sensor 2 has a short circuit in the connector, wiring, or the sensor for more than .5 seconds during one drive cycle.
The ECM has an internal short circuit in the IAT2 circuit or the connector to the ECM has a short.
Visually checks the electrical connections and wire harness to the intake air temperature sensor.
Clears codes and verifies if the code returns.
Scans the IAT2 sensor and compares the output to be within specifications compared to a normal reading.
Disconnects the IAT2 sensor connector and verifies the temperature reading goes below -4° F.
Shorts the two connector wires together to see if temperature readings go above 212° F.
Uses a multimeter to check the resistance of the IAT2 sensor to be within specifications.
Replaces the sensor if the sensor is not within specifications.
Follows pinpoint tests if any failures are found in above tests.
Follow these simple guidelines to prevent mistakes:
Verify the failure by clearing the code and retesting to see if the problem is still present.
Follow pinpoint tests step-by-step to isolate the failure of the IAT system.
Do not replace any parts unless directed by the pinpoint tests or visual testing.
The engine can hesitate and have a lack of power during acceleration.
The engine may fail emission testing.
Continued use in a failed state can cause the engine to get carboned up.
The ECM will substitute a 70° F sensor output for the out-of-specification reading of the sensor.
The engine may run rough or hesitate if the outside temperature is more than 10° F different from the 70° F the ECM uses as a substitute output.
The IAT2 code P0097 can be caused from a broken or cracked sensor connector or contamination from engine oil or coolant from other leaks. Any kind of sensor, wiring, or connector short circuit will cause this code and may also cause additional codes, such as P0096, P0098, and P0099 depending on the cause.
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