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 good reading from one of the oxygen sensors in the exhaust system. It's like trying to hear someone whispering from far away.
The OBD-II code P1150 indicates that the signal from the oxygen sensor located on bank 2, sensor 2, is lower than expected. This sensor helps monitor the efficiency of the catalytic converter.
P1150 is triggered when the Powertrain Control Module (PCM) detects that the oxygen sensor's signal voltage is not within the expected range for a certain amount of time. This sensor is located downstream of the catalytic converter on bank 2, which is the side of the engine opposite cylinder 1.
• Check Engine Light is on
• Poor fuel economy
• Failed emissions test
• Faulty oxygen sensor
• Wiring or connector issues
• Exhaust leaks
Oxygen Sensor: A device that measures the amount of oxygen in the exhaust gases.
Bank 2: The side of the engine opposite cylinder 1.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the oxygen sensor's voltage and resistance.
• Replace the faulty oxygen sensor.
• Repair or replace damaged wiring or connectors.
• Fix any exhaust leaks.
• OBD-II scanner
• Multimeter
• Socket set
$150 - $300
Moderate
• Toyota Camry
• Lexus RX300
• Ford F-150
• Regularly inspect and maintain the exhaust system.
• Use high-quality fuel.
• Perform regular vehicle maintenance.
Sensor Issue
• Have a professional check the vehicle if you're not comfortable with car repairs.
• Avoid driving for extended periods with the Check Engine Light on.
Check with your vehicle manufacturer for warranty coverage on emissions components.
This code has been commonly reported in vehicles with high mileage or those that have not had regular exhaust system maintenance.
Moderate – While the vehicle may still be drivable, it's important to address this issue to avoid further damage and ensure emissions compliance.
Driving with a faulty oxygen sensor can lead to increased emissions, which may not comply with local environmental regulations.
• Engine at operating temperature
• Vehicle running at idle
The oxygen sensor is located in the exhaust system downstream of the catalytic converter on bank 2.
Q: Can I drive my car with a P1150 code?
A: While you can drive with this code, it's best to fix it soon to avoid further issues.
Q: How long does it take to replace an oxygen sensor?
A: Replacing an oxygen sensor typically takes about 1 to 2 hours.
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Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
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Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal 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.