What is the life expectancy of an oxygen sensor?

Heated oxygen sensors should be checked or replaced every 60,000 miles, while unheated oxygen sensors should be checked or replaced every 30,000 miles

Do I need to replace all of the sensors at once?

It is best to replace O2 sensors in pairs. Because, replacing one sensor will cause the ECU to set a code for the other sensors. This is because the new sensor switching activity is much faster than that of the older aged sensors

The oxygen sensor will not come out.

If you are using an open end wrench, try an O2 socket. If this fails, try a long ratchet or breaker bar in conjunction with your socket to generate more torque. After the sensor is removed, be sure to use a thread cleaner to clean up the bung threads

Why does the fault code still exist after replacing the oxygen sensor?

1 Oxygen sensor circuit failure

Will this oxygen sensor work with my vehicle?

Marsflex oxygen sensor is consistent with OEM, please refer to the page information for compatibility information. You can check 'Amazon confirmed it' for confirmation, or provide us with your vehicle information and we will confirm it for you.

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Description

⛽ Upgrade your ride’s brain — optimize fuel, power, and peace of mind!

GUARANTEED RELIABILITY - Extensively tested with a 1-year warranty to keep your engine running at peak performance
DURABLE HIGH QUALITY BUILD - Crafted with premium materials to extend catalytic converter life and sensor longevity
PLUG AND PLAY INSTALLATION - Exact OE specification fit with 14.3-inch length for hassle-free replacement
WIDE VEHICLE COMPATIBILITY - Perfectly engineered for Toyota & Lexus models 2002-2011, ensuring perfect match every time
PRECISION ENGINE PERFORMANCE - Enhances combustion efficiency for smoother drives and lower emissions

The Marsflex Air Fuel Ratio O2 Oxygen Sensor 234-9042 is a high-quality upstream replacement sensor designed for select Toyota and Lexus models (2002-2011). Engineered to meet or exceed OE specifications, it improves engine performance, fuel economy, and catalytic converter longevity. With a precise fit, durable materials, and backed by a 1-year warranty, it’s the smart upgrade for drivers who demand reliability and efficiency.

Specifications

Brand	Marsflex
Item dimensions L x W x H	5.91 x 2.17 x 2.17 inches
Material	234-9042
Item Weight	4 Ounces
Style	Upstream
Current Rating	6 Amps
Lower Temperature Rating	150 Degrees Celsius
Maximum Supply Voltage	12 Volts
Measurement Accuracy	Go & No-go Gauge
Measuring Range	λ=0.6- ∞
Mounting Type	Flange Mount
Output Type	electrical signal
Response Time	18 seconds
Sensing Distance	1000 Millimeters
Specific Uses For Product	Oxygen Sensor
Upper Temperature Rating	930 Degrees Celsius
Manufacturer	Marsmotor
Item Weight	4 ounces
Product Dimensions	5.91 x 2.17 x 2.17 inches
Item model number	APEL14055
Manufacturer Part Number	APEL14055
Wattage	15 watts

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