The Lexus S430 is in fact classified as an SC430. The "C" stands for "coupe," which is the onliest plan the S430 replica is available. The Four hundred thirty is related to the 4.3-liter V-8 engine. Cardinal manufactured in 2001, the SC430 features four O2 sensors. Two located up front on the converters bolted to the manifolds (one per engine side), and two another located near the two rear catalytic converters. Although the procedure to interchange any of them is the duplicate, the sensors are contrasting forward and aft, and defining which sensor has failed Testament hurting for a code reader/announce stuff and brainy where your figure one cylinder is located.
Instructions
1. Halt which O2 sensor needs to be replaced. Plug a rule reader or study effects into the diagnostic link connector located below the Chauffeur's side dashboard. Turn the Lexus SC430 ignition to the "accessories" position. Ensue the instructions of the statute reader or peruse thing to elicit which sensor has failed. Bank one-sensor one is the forward-most (In relation to the engine) sensor located on the alike side as the figure one cylinder. Bank one-sensor two is downstream on the duplicate side, near the rear catalytic converter. Respectively, the two sensors for bank two are positioned in the identical fashion on the adverse side of the engine and exhaust.
Proceed from the wire harness of the sensor you're going to interchange until you gem the plug. It Testament be eight or nine inches away from the sensor. Disconnect the plug of the sensor from the plug of the wire harness.
2. Lift the SC430 whether you're replacing one of the cipher two sensors. The symbol one sensors may be easier to access from the engine compartment on either side of the engine by the manifold.3.
4. Use the oxygen sensor socket and a flex-head ratchet to remove the sensor from the exhaust porthole. A Twenty two mm wrench can also be used, but the amount of room available may restrict its effectiveness. Turn the sensor counterclockwise from the exhaust porthole to remove. Remove the sensor.
5. Thread the new direct-fit sensor into the exhaust porthole by hand to guarantee you're not cross-threading it. Snugly tighten the sensor with the socket and ratchet (or the Twenty two mm wrench). Do not over-tighten the sensor because the threads on the sensor can easily strip.
6. Plug the sensor wire plug back into the wire harness plug.
7. Rescan the PCM using the code reader or scan tool. Follow the directions to erase the code to clear the check engine light.
