Maybe go back a week later, whenever you have the free time, and see if there is a code again. The O2 heater is used to get the O2 sensor to reach operating temperature as quickly as possible as the engine runs most efficient when it's in closed loop. Also sometimes there is a pcm reflash for the pro. It technically stands for: The purpose of the heated element in the oxygen sensor is to quickly bring it up to normal operating temperature after your Accord has been started. Typically, heated O2 sensors have four wires — two of which go to the heater circuit and two that are power and ground for the sensor. You should use this video as one information source of many, and you use this information at your own risk. The most frequent fix is to replace the sensor.
I think a good starting point is to describe how an O2 sensor works. For example say the engine is running rich, there is less oxygen in the exhaust stream and still the same amount of oxygen in the outside air, this difference causes the O2 to produce a high voltage, typically near 1. The code is triggered when the sensor is taking too long to warm up. To test the ground side of the circuit, connect the red multimeter lead to the battery positive terminal and the black lead to ground. Bank 2 is the opposite side of the engine.
Figuring out which 'bank' is probably going to be the most difficult part so we'll start with that. Sorry for the delayed reply. Sensor 2 is the sensor loca … ted after the cat converter. You can do this using a. Set your multimeter to the volts setting. Perform this test with a completely cold engine.
Then, connect your meter leads to both of the heater circuit pins on the sensor side of the connector. The O2 sensors in the catalytic converter or behind the catalytic converter secondary O2 sensors are there to monitor catalytic converter efficiency, we'll cover those in another article but if one of those has a heater failure the testing is exactly the same as for a primary O2 sensor. If you have anything that you would like to add, please feel free to leave a comment below. It is used to determine the concentration of oxygen in the exhaust gas. MikeP Gus meant to set the Parking Brake. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors.
Once again, in this case, the sensor should be replaced. YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. The good thing about these codes is that for the most part O2 sensors are fairly universal, sure they are made by a bunch of different manufacturers Bosch being the first one back in the late 60's but the principals of operation are almost identical no matter who makes it. Modern vehicles use both an upstream and downstream oxygen sensor. Now that we know what wires we're dealing with we can do a simple test to confirm that indeed the sensor heater is faulty.
Any tools, parts recommendations links used in this video must be verified by you to be applicable to your situation. After you've replaced the oxygen sensors and tested the charging system, clear the codes and drive it for a while to see what happens. Consult the service information to see if the resistance value on your meter is within specification. It shows it located directly on the exhaust pipe right before the catalytic converter. Good luck finding whatever caused it in your Honda Accord.
What repairs can fix the P0141 code? Visit the Related Link for more information. The sensor compares amount of oxygen in the exhaust to the surrounding air there is an opening in the sensor that is exposed to the atmosphere. Maybe replac … e the oxygen sensors first. Tools and Parts on Amazon:. You can find this tutorial in Spanish here: at: autotecnico-online.
They are presented in order somewhat of most to least likely to cause the problem. You are solely responsible for the safe use of tools and equipment during your repair. A P0141: Secondary Heated Oxygen Sensor Sensor 2 Heater Circuit Malfunction trouble code on your 1. The other 2 wires are a signal wire and a ground wire. But conversely, the dolphins had always believed that they were far more intelligent than man —for precisely the same reasons! Here are some videos on how an O2 sensor operates and also one on P0141 diagnosis. Check the wiring diagram for your application to be sure because you want to get this right. So if you look at the engine block from the front you'll see that one bank is closer to you than the other, this is bank 1 and the cylinder that's closest to you is cylinder 1.