P0098 ACURA - Intake Air Temperature Sensor 2 Circuit High Voltage

What the P0098 code means

P0098 is the OBD-II generic code indicating the engine control module (ECM) has determined that the intake air temperature sensor 2 (IAT2) has an open circuit in the sensor circuit.

What causes the P0098 code?

  • Faulty Intake Air Temperature sensor
  • Intake Air Temperature sensor harness is open or shorted 
  • Intake Air Temperature sensor circuit poor electrical connection

P0098 ACURA Intake Temperature Sensor Video

When is the P0098 code detected? 

The Engine Control Module (ECM) has detected a high voltage condition on the Intake Air Temperature (IAT) circuit.

Common mistakes when diagnosing the P0098 code?

Not verifying IAT failure by clearing the codes and road testing to see if the problem comes back
Not following the testing step-by-step to locate the problem within the IAT system
Replacing parts before conducting thorough pinpoint tests or visual checks

Possible symptoms of P0098

Engine Light ON (or Service Engine Soon Warning Light)

P0098 Acura Description 

The Intake Air Temperature (IAT) sensor contains a semiconductor device which changes the resistance based on the temperature (a thermistor). The IAT sensor is located in the air intake passage of the engine air induction system. The IAT sensor has a signal circuit and a ground circuit.