P0098
Intake Air Temperature Sensor 2 Circuit High Bank 1
Fuel & air metering
Generic OBD-II
Low
What it means
P0098 means the intake air temperature sensor 2 circuit (bank 1) is reading high — usually an open circuit or short-to-voltage, so the signal looks unrealistically cold. The ECM uses this reading to trim fueling and timing, so a fault typically causes only minor hesitation or slightly worse economy. It's an electrical sensor problem and does not prevent the engine from starting.
Low
Can I keep driving? The engine runs and drives; you may notice slight hesitation or worse economy, but it won't cause a no-start.
Common symptoms
What you'll notice
- Check-engine light on
- Slightly reduced power or hesitation
- Worse fuel economy
- Often no strong driving symptoms beyond the warning light
Common causes
Most likely first
- Faulty intake air temperature sensor 2, bank 1Likely
- Open circuit or short-to-voltage in the sensor wiringCommon
- Corroded or loose connector at the sensorCommon
- Damaged wiring near the sensorLess often
- Failed ECM/PCM input (least likely)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and check IAT2's reported temperature for a plausible value versus intake air temp.
- Inspect the sensor connector and wiring for an open or short-to-voltage.
- Check for corrosion or a loose pin at the connector.
- Measure sensor resistance against spec; replace the sensor if out of range.
- Repair the wiring/connector fault, clear the code, and road-test.
FAQ
Quick answers
Is it safe to drive with P0098?+
Yes, generally. The ECM uses a default value, so the engine still runs — but fueling won't be optimal, so fix it to restore economy and smoothness.
Can I just clear P0098?+
It will return until the sensor or wiring is repaired, since the circuit reads high (open) continuously.
Related codes
Often seen with P0098
Read & clear P0098 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX