![]() ![]() Wiring– Most of the time, Bank 1 Sensor 1 is not going to be very difficult to get to.Here is a list of common potential causes for P0134 in general: There are a lot of different things that can cause P0134 to be thrown in the Odyssey. Increased exhaust smell, black color from tail pipe.Most of the time, the only symptom of P0134 is going to be the service engine soon light. This video is extremely helpful in going about how to test P0134: If it doesn’t (or does so too slowly) the P0134 code will be thrown. As the engine warms up, this voltage is supposed to change. The PCM supplies a voltage or roughly 450mv to the O2 sensor. Sensor 1 will be the first sensor in the line. If it’s an inline engine (almost all 4 cylinder motors), you don’t need to worry about which side it’s on, since there’s only one exhaust manifold. Look up which side of the engine bank 1 is on That means that different model years and engine can have Bank 1on a different side. Bank 1 is the side of the engine that has the first piston in the firing order. When there is no signal from this oxygen sensor, the engine will not be able to run at optimal efficiency, and you’ll get that annoying check engine light. It uses this data to tune the engine on the fly. The Odyssey’s computer uses the oxygen sensor to measure the amount of O2 gases in the exhaust. P0134: O2 Sensor → No Activity Detected →Bank 1 Sensor 1 It means that the PCM/ECM is not detecting any activity from the sensor. It’s generic, which means that it has the same meaning for any vehicle with OBDII. ![]() (I'll have to clamp the wires while a friend turns the key to on.P0134 is a relatively common OBDII trouble code. I might check for voltage in the wires tomorrow, but I'm pretty sure I know what I'll get. I know that there is a relay that provides power to the O2 sensor but it also provides power to the other O2 sensor and a couple of other sensors. This leads me to believe that the problem is in the circuit away from the O2 sensor. This vehicle only has two O2 sensors and I verified that I had in fact replaced the one before the Cat. Googling the code, I've come to realize that the code is specifically for "Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)". I went home and double checked everything. I took it to Autozone to have them clear it to no avail. I purchased a Bosch direct fit and had it in without trouble. I had the check engine light come on and Autozone told me it was a P0135 and that I needed a new oxygen sensor. This is basically the same engine as a 1998 honda accord. Let me know if you have other questions or need help. If you have a diagnostic trouble code indicating an issue with an O2 sensor, let me know what it is and I can direct you better. Please keep in mind, it isn't normal for all of these to go bad at the same time. Disconnect the rear secondary HO2S4P connector (A), then remove the rear secondary HO2S (B). Disconnect the front secondary H02S 4P connector (A), then remove the front secondary HO2S (B).ġ. Pics 4 and 5 correlate with these directions.ġ. Disconnect the rear A/F sensor 6P connector (A), then remove the rear A/F sensor (B). Install the parts in the reverse order of removal.ġ. Disconnect the front A/F sensor 6P connector (A), then remove the A/F sensor (B).Ģ. O2 sensor socket wrench, Snap-on YA8875 or SWR2, or equivalent, commercially availableġ. The first set of directions and pictures 2 and 3 show how to replace sensor 1 for both the front and rear banks. Here are the directions specific to your vehicle. Here is a link that shows how one is replaced: Each bank of the engine (there are two banks) has two sensors. You have two upstream and two down stream. ![]()
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