🔥 Enhance Engine Performance with Denso 234-4516 OE Heated 4-Wire Downstream Oxygen Sensor 15.75” Review

Custom Fit 2009 Toyota Sienna Van Easy to install after engine catalytic firewall. Easy to install when there is an elevator or pit.

A great replacement for my 2006 Sienna which used to code P0037 OBD-II. Problem solved. Two months have passed and the tick is not lit.

Item arrived quickly. It replaced one of three failed sensors ordered from a supplier in California who sold an inexpensive pack of 4 debris sensors. My OBD-II gauge recognizes and reads the output from this sensor, which is great for diagnosing future problems if they arise.

Same day delivery was great. Check the plug match. Check the resistor on the old one to make sure it's bad before removing it. Soak the old one in penetrating oil and let it sit before removing it. Also check the heat protection clips near the sensor. A loose or faulty heat shield can cause problems with the sensor (or associated wiring).

Looks like the original. Installation was easy once you know what you're doing. The first one I received was an open box and someone installed it back. I had to wait a few days for another one, install it, warm up the engine and pass the 6 mile road test. No check engine light, trac, vsc. I will update when the lights come back on.

Had a code, P0420: Catalytic System Efficiency Below Threshold (Bank 1). This is the bottom sensor that is easily accessible under the car. I had to strain my neck to see the upper exhaust manifold sensor and pray I didn't have to replace that sensor. Easy to replace oxygen sensor. For the 2004 Sienna it is recommended to remove the console trim using the accelerator pedal to access the wiring connector (pull out the two locking pins). The sensor comes with a rubber grommet on the cable to seal

I have a 2006 Toyota Sienna XLE, Check Engine, TRAC and VSC lights on. Oxygen sensor and replacement is an additional $400 including parts and labor. I decided to take a look. I went to Advance Auto and used their code reader, then looked up the code online and found that I needed to replace the oxygen sensor just before the catalytic converter. I lifted the van from the driver's side. and the sensor is almost right in the riders front wheel, i used a big adjustable wrench and it came loose…