Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is having trouble getting a quick signal from one of the oxygen sensors when you take your foot off the gas pedal.
This code indicates that the oxygen sensor on Bank 2, Sensor 2 is not responding quickly enough after the fuel is cut off during coasting.
The P1098 code is triggered when the Engine Control Module (ECM) detects that the oxygen sensor located on Bank 2, Sensor 2 has a slow response time after the fuel cut-off during a coast down event. This sensor is responsible for monitoring the amount of oxygen in the exhaust gases, and a slow response can affect the engine's efficiency and emissions.
• Check Engine Light is on
• Poor fuel economy
• Rough idle or stalling
• Faulty oxygen sensor
• Wiring issues or poor connections
• Exhaust leaks near the sensor
ECM: Engine Control Module
Oxygen Sensor: A device that measures the proportion of oxygen in the exhaust gases
• Use an OBD-II scanner to confirm the code.
• Inspect the oxygen sensor and its wiring for damage.
• Check for exhaust leaks near the sensor.
• Replace the faulty oxygen sensor.
• Repair or replace damaged wiring or connectors.
• Fix any exhaust leaks.
• OBD-II scanner
• Wrench set
• Multimeter
$150 - $300
Moderate
• Honda Accord
• Toyota Camry
• Ford F-150
• Regularly inspect and maintain oxygen sensors.
• Ensure exhaust system is free from leaks.
• Perform routine vehicle diagnostics.
Sensor Issue
• Avoid ignoring the Check Engine Light.
• Have regular maintenance checks.
• Consult a professional mechanic if unsure.
Oxygen sensors may be covered under the vehicle's emissions warranty.
Oxygen sensor issues have been common due to their critical role in emissions control and fuel efficiency.
Moderate – It should be addressed to prevent further engine performance issues.
Ignoring emissions-related codes can lead to failed emissions tests and potential fines.
• Engine at operating temperature
• Coasting conditions
The oxygen sensor is located in the exhaust system on Bank 2, after the catalytic converter.
Q: What happens if I don't fix the P1098 code?
A: Ignoring this code can lead to decreased fuel efficiency and increased emissions.
Q: Can I drive my car with a P1098 code?
A: While the car may still be drivable, it's best to address the issue to avoid long-term damage.
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Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
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Fitment Required · Vehicle-fitment part
Relevant when the code or supporting diagnostics point toward upstream or downstream oxygen-sensor faults.
This code family often involves upstream or downstream oxygen-sensor diagnosis.
Verify exact sensor position and vehicle fitment before buying.
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Fitment Required · Vehicle-fitment part
Relevant when catalyst-efficiency or emissions faults persist after proper diagnosis.
Catalyst-efficiency faults sometimes point toward converter problems after proper testing.
Catalytic converters are highly vehicle-specific and should not be purchased by code alone.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.