There are two O2 sensors on a '94 Lexus ES300. Both are located on the exhaust manifolds. There is one accessible from the front just to the right off-center of the engine, and one is located on the rear of the engine down low approximately centered with the engine. Hope this helps. WB
Under the intake manifold.
It just cost me $220.00
there is usally 3 o2 sensors 1 on the front of your motor looks like a spark plug sticking out and one on your exsaust and another one somewhere else look on google
That year has 2 oxygen sensors.
Stop by your local AutoZone. They will hook it up to a handheld tester and print out which oxygen sensor is failing.
check the O2 sensors
The 1994 Nissan 300ZX is equipped with four oxygen (O2) sensors. It has two upstream sensors located before the catalytic converters and two downstream sensors located after them. This configuration helps monitor and optimize the engine's air-fuel mixture and emissions performance.
On the Lexus SC 300, the oxygen sensors are typically located in the exhaust system. There are usually two types: the upstream (pre-catalytic converter) O2 sensor, which is found before the catalytic converter, and the downstream (post-catalytic converter) O2 sensor, located after it. Depending on the specific model year, these sensors can be found on both sides of the exhaust system, near the engine and the catalytic converter.
The labor cost should be around $120 dollars. Hopefully you can get a couple of estimates and go with the cheapest.
In a 1997 Lexus LS400, there are typically four O2 sensors located in the exhaust system. Two are positioned upstream (pre-catalytic converter) and two downstream (post-catalytic converter) of the catalytic converters. The upstream sensors monitor the air-fuel mixture, while the downstream sensors check the efficiency of the catalytic converters. Accessing them usually requires lifting the vehicle for better visibility and reach.
On a Lexus IS300, the O2 sensor signal can typically be found in the engine bay, connected to the exhaust system. The upstream O2 sensor is located in the exhaust manifold or just after it, while the downstream sensor is located after the catalytic converter. You can access the wiring harness connector for the O2 sensors by following the exhaust pipes and locating the sensors. For precise identification, consulting the vehicle's service manual is recommended.
it has a total of four