P0098: Intake Air Temperature Sensor 2 Circuit High Bank 1

Intake air temperature sensor 2 is the second air temperature sensor in the intake path; on many turbocharged engines it sits in the intake manifold, often combined with the manifold pressure sensor, and is used to calculate cylinder filling and ignition timing. For P0098, the sensor signal is above its valid range. With the usual voltage-type NTC sensor this means an open circuit or a short to the reference voltage, and the control module reads an extremely low temperature; with sensors that have a frequency output, a high signal corresponds to an extremely high temperature.

Bank 1 is the side of the engine with cylinder 1. Inline engines only have this bank.

Symptoms

• Check engine light on
• Usually no noticeable symptoms
• Slightly changed power or knock control with an implausible reading

Most likely causes

• Connector loose or corroded, or wire interrupted
• Sensor open internally
• Sensor ground interrupted
• Engine control module faulty

What to check, in order

Start with the simplest. You can tick off each step.

1. With the engine cold, compare the reading with the outside temperature
2. Check the sensor's ground and make sure the signal wire is not receiving voltage from another circuit.
3. Check the connector
4. Measure the sensor's resistance against the manufacturer's specification
5. Check power and ground before replacing it

Good to know

• Repair difficulty: easy
• It affects emissions.

What each character of P0098 means

• P: Powertrain: engine and transmission
• 0: Generic code: same on every make
• 0: Subsystem depends on the code range
• 98: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0098?

Yes, you can normally keep driving and take it to a repair shop when convenient.

What causes code P0098?

The most common causes are: connector loose or corroded, or wire interrupted; sensor open internally; sensor ground interrupted.

Related codes

• P0095Intake Air Temperature Sensor 2 Circuit Bank 1
• P0096Intake Air Temperature Sensor 2 Circuit Range/Performance Bank 1
• P0097Intake Air Temperature Sensor 2 Circuit Low Bank 1
• P0099Intake Air Temperature Sensor 2 Circuit Intermittent/Erratic Bank 1

Sources

• law.cornell.edu: 13 CCR 1968.2
• newtonnet.co.uk: fordobd2012
• fordservicecontent.com: OBD Operations Summary Gasoline 2020 2023
• gsi.ext.gm.com: 16OBDG04 Engine Diagnostics

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.