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

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LSU 4.9 5-Wire Lambda WideBand O2 Oxygen Sensor 17025 Fit for AEM 30-4110 30-0300 30-0310 - X Series AFR Inline Controller - UEGO Air Fuel Ratio Wideband

LSU 4.9 5-Wire Lambda WideBand O2 Oxygen Sensor 17025 Fit for AEM 30-4110 30-0300 30-0310 - X Series AFR Inline Controller - UEGO Air Fuel Ratio Wideband

Product ID: 455991840

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Details

Brand
Marsflex
Item dimensions L x W x H
5.91 x 2.17 x
Material
17025
Item Weight
0.19 Kilograms
Style
Air fuel ratio

🔥950°C max temp resistance

🔧OE-spec 40-inch plug & play

⏱️10s fast response time

Description

🚗 Tune in to precision, drive with confidence!

BACKED BY CONFIDENCE - Comes with a 12-month warranty and proven global performance to keep your engine running clean and efficient.
LONG LASTING RELIABILITY - Tested over 10,000 hours and 500 thermal cycles with IP67 dust/water protection for 80,000-100,000 km lifespan.
PLUG PLAY INSTALLATION - OE-spec 40-inch cable and exact plug fit for hassle-free, professional-grade setup.
AEROSPACE GRADE DURABILITY - Built with stainless steel housing & ceramic core to withstand extreme heat and harsh conditions.
PRECISION FUEL OPTIMIZATION - Delivers real-time, ultra-accurate air-fuel ratio data to boost fuel economy by up to 15%.

The Marsflex LSU 4.9 5-Wire WideBand O2 Sensor is a high-performance oxygen sensor designed for AEM UEGO controllers. Featuring aerospace-grade materials, IP67 protection, and a rapid 10-second response time, it ensures precise air-fuel ratio readings to optimize fuel efficiency and reduce emissions. With a durable 40-inch OE-spec cable and plug, it guarantees easy installation and a long service life of up to 100,000 km, backed by a 12-month warranty.

Specifications

Brand	Marsflex
Item dimensions L x W x H	5.91 x 2.17 x 2.17 inches
Material	17025
Item Weight	0.19 Kilograms
Style	Air fuel ratio
Current Rating	2.6 Amps
Lower Temperature Rating	150 Degrees Celsius
Maximum Supply Voltage	20 Volts
Measurement Accuracy	Go & No-go Gauge
Measuring Range	λ=0.6- ∞
Mounting Type	Flange Mount
Output Type	electrical signal
Response Time	10 seconds
Sensing Distance	1000 Millimeters
Specific Uses For Product	Oxygen Sensor
Upper Temperature Rating	930 Degrees Celsius
Manufacturer	Marsmotor
Item Weight	6.7 ounces
Product Dimensions	5.91 x 2.17 x 2.17 inches
Item model number	17025
Manufacturer Part Number	APEL14003
Wattage	7.5 watts

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