Oxygen sensor failure

Hello, thank you for the various responses. I've already checked the sensor wiring, as it does indeed have two sensors, and all the wiring appears to be in good condition. Someone mentioned a program to scan the sensors or the car's computer online. Could you provide a link to download it, and where can I find the current values ​​you mentioned for the sensors? Many thanks to everyone, and Happy 2010!
Sincerely, Tino

Hi: A simple and inexpensive way to test the oxygen sensor is with a multimeter. Set it to measure DC voltage in millivolts. Connect the multimeter lead to ground (-) and the positive lead to the sensor's signal wire, which is usually black or blue (sensors come with 1 wire (black or blue), 3 wires (black, white, and white), or 4 wires (black, 2 white, and gray)).
The voltage it should deliver fluctuates between 0.200 and 0.800. Start the engine and set it to approximately 2000 rpm. If it's working correctly, the voltage should fluctuate within that range, almost always starting at 0.8, then dropping to 0.2, then back to 0.8, and so on.
I hope this information is helpful
. Regards.

Hi, regarding paid scanning programs, you can find cracked copies online: Digimoto, PCMScan Data Pro, ScanXL, Diagnose 41, ScanTool22, OBD2Ceasy, etc. They work well with Windows XP and have issues with Windows Vista.

As you can see, there are several, but it's not that simple. They require an electronic interface to connect to the car. The cheapest and easiest to find are the ELM327 versions 1.3 or 1.5, or their Chinese clones, which come with basic software.

The schematics for the ELM interface module of various models are available online, but the main chip isn't commercially available; it's only sold by one manufacturer. It's a PAL (programmable logic array) integrated circuit with copy-protected software.

The interface costs around $39 in China. Shipping is about $35 more, and it takes 5 days via DHL to arrive at your door. This device reads fault codes and engine parameters (though not all) and resets the check engine light with its original software.

It can do more with other software.
To see an inexpensive interface and scanner, check out www.ipmart.com.
Look for CARS in the top horizontal bar and then DIAGNOSTIC TOOLS.

They are distributors in Malaysia and China for everything and sell individual units if you're interested.

Good luck!