Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car has a sensor that checks how clean the air is coming out of the engine. This sensor is not working as fast as it should, like when a light bulb takes too long to turn on.
The oxygen sensor in the exhaust system is not switching between lean and rich conditions quickly enough, which can affect engine performance.
The P1114 code indicates that the oxygen sensor located on Bank 2 Sensor 1 is not switching between lean and rich conditions within the expected time frame. This slow response can lead to improper fuel mixture adjustments by the engine control module (ECM), affecting the vehicle's emissions and performance.
• Check Engine Light illuminated
• Poor fuel economy
• Rough engine idle
• Faulty oxygen sensor
• Wiring issues or poor connections
• Exhaust leaks
Oxygen Sensor: A device that measures the amount of oxygen in the exhaust gases.
Lean Condition: A condition where there is more air than fuel in the combustion process.
Rich Condition: A condition where there is more fuel than air in the combustion process.
• Use an OBD-II scanner to confirm the code.
• Inspect the oxygen sensor and 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
• Multimeter
• Wrench set
$150 - $300
Moderate
• Toyota Camry
• Honda Accord
• Ford F-150
• Regularly inspect and maintain exhaust system.
• Ensure good quality fuel is used.
• Perform regular vehicle diagnostics.
Sensor Issue
• Have the vehicle inspected by a professional.
• Avoid ignoring the Check Engine Light.
• Monitor fuel consumption for changes.
Oxygen sensors may be covered under the vehicle's emissions warranty.
Oxygen sensor codes like P1114 have been common as vehicles age and sensors wear out.
Moderate – Addressing this issue can prevent further engine performance problems.
Driving with a malfunctioning oxygen sensor can increase emissions and may not comply with local emissions laws.
• Engine at operating temperature
• Vehicle running at idle
The oxygen sensor is located on the exhaust manifold of Bank 2, before the catalytic converter.
Q: Can I drive with a P1114 code?
A: While the car may still run, it's best to address the issue to avoid poor fuel economy and increased emissions.
Q: How often should oxygen sensors be replaced?
A: Typically, oxygen sensors should be replaced every 60,000 to 90,000 miles, but check your vehicle's manual for specifics.
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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.