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P0098 — Intake Air Temperature Sensor 2 Circuit High Input
CautionEngineLimp to the next safe stop
Seen on: Heavy Truck
Intake Air Temperature Sensor 2 Circuit High Input. Common causes: IAT2 sensor open circuit.
Don't risk it — get a diesel tech on the truck.
Your code rides along, so nearby mechanics see the fault before they quote you.
How serious is it?
Caution. Limp to the next safe stop.
Most likely causes
- IAT2 sensor open circuit
- Broken wire
- failed sensor
First moves (roadside)
- Measure IAT2 resistance at ambient
- replace if open
FAQ
What does P0098 mean?
Intake Air Temperature Sensor 2 Circuit High Input. Common causes: IAT2 sensor open circuit.
How serious is P0098?
Caution — Limp to the next safe stop.
What's the most likely cause of P0098?
The most common cause is: IAT2 sensor open circuit. Other possibilities include Broken wire; failed sensor.
Can I keep driving with P0098?
Limp to the next safe stop. When in doubt, get a qualified mobile diesel tech on the truck before continuing.
Throwing this code right now?
Find a mechanic or related guides
General diagnostic guidance for diesel engines (Cummins, Detroit, PACCAR, Volvo, Mack and more). Not a substitute for a scan-tool diagnosis on your specific truck.