Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer thinks there's not enough fuel being mixed with air in one part of the engine. It's like if you were trying to bake a cake but didn't use enough sugar, so it doesn't taste right.
The oxygen sensor after the catalytic converter on bank 2 is detecting a lean condition, meaning the air-fuel mixture is too lean (not enough fuel).
The P114D code indicates that the post-catalyst oxygen sensor on bank 2 is reporting a lean condition. This is detected by the vehicle's powertrain control module (PCM) when the fuel trim adjustments are outside the expected range, suggesting that there is too much air and not enough fuel in the exhaust gases after the catalytic converter.
• Check Engine Light is on
• Poor fuel economy
• Rough idle
• Faulty oxygen sensor
• Exhaust leak near the sensor
• Fuel injector issues
Oxygen Sensor: A device that measures the oxygen level in the exhaust gases.
Catalytic Converter: A part of the exhaust system that reduces harmful emissions.
• Use an OBD-II scanner to confirm the code
• Inspect the oxygen sensor and wiring for damage
• Check for exhaust leaks near the catalytic converter
• Replace the faulty oxygen sensor
• Repair any exhaust leaks
• Clean or replace fuel injectors
• OBD-II scanner
• Wrench set
• Multimeter
$150 - $400
Moderate
• BMW 3 Series
• Ford F-150
• Chevrolet Silverado
• Regular maintenance checks
• Timely replacement of oxygen sensors
• Ensure fuel system is clean
Sensor Issue
• Do not ignore the Check Engine Light
• Get the vehicle inspected by a professional
• Avoid driving the vehicle aggressively until repaired
Check if the oxygen sensor is covered under the vehicle's emissions warranty.
This code has been commonly reported in vehicles with high mileage or those that have not had regular maintenance.
Moderate – It should be addressed soon to avoid potential engine damage.
Driving with a lean condition can lead to engine damage and increased emissions, which may not comply with local regulations.
• Engine at operating temperature
• Vehicle in closed loop mode
The oxygen sensor is located in the exhaust system after the catalytic converter on the side of the engine known as bank 2.
Q: Can I drive with a P114D code?
A: It's not recommended to drive for long periods with this code, as it can lead to engine damage.
Q: What does 'bank 2' mean?
A: Bank 2 refers to the side of the engine that does not contain cylinder 1.
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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.