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 saying that the sensor in the exhaust pipe, which helps the car run smoothly, is not working fast enough.
This code indicates that the oxygen sensor in the exhaust system is not switching from a lean condition to a rich condition quickly enough.
The P1119 code is triggered when the engine control module (ECM) detects that the oxygen sensor (Bank 1 Sensor 1) is not switching from a lean to a rich mixture as quickly as expected. This can affect the air-fuel ratio and engine performance.
• Check Engine Light is on
• Poor fuel economy
• Rough idle
• Faulty O2 sensor
• Wiring issues or poor electrical connections
• Exhaust leaks
ECM: Engine Control Module
O2 Sensor: Oxygen Sensor
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connections to the O2 sensor
• Check for exhaust leaks near the sensor
• Replace the O2 sensor
• Repair or replace damaged wiring
• Fix any exhaust leaks
• OBD-II scanner
• Multimeter
• Wrench set
$100 - $300
Moderate
• Toyota Camry
• Honda Accord
• Ford Focus
• Regularly check and replace the O2 sensor as needed
• Maintain the exhaust system
• Ensure proper engine tuning
Sensor Issue
• Do not ignore the Check Engine Light
• Have the vehicle inspected by a professional
• Avoid prolonged driving with this issue
Check with the vehicle manufacturer for specific warranty coverage on emissions-related components.
This code has been associated with vehicles that have high mileage or those that have not had regular maintenance.
Moderate – It should be addressed soon to prevent further issues.
Driving with a faulty O2 sensor can lead to increased emissions and may not comply with emissions regulations.
• Engine at operating temperature
• Vehicle in closed-loop mode
The O2 sensor is located in the exhaust manifold or exhaust pipe before the catalytic converter.
Q: Can I drive with a P1119 code?
A: While the car may still run, it's not recommended to drive for long periods with this code as it can lead to other issues.
Q: How often should the O2 sensor be replaced?
A: Typically every 60,000 to 100,000 miles, but check your vehicle's manual for specifics.
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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.