P0151 harley

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Questions about a tuner? Tips on Engine Diagnostics, how to get codes, and what they mean. Find your answers here. Keep getting error code - PO Thread Tools.

P0151 harley

The codes are specifically listed as P and P codes. The description in the Service Manual is: P Front O2 sensor low or engine running lean P Rear O2 sensor low or engine running lean The key point to look at here is "O2 sensor low" when analyzing what is happening with the IED's in place. The O2 sensor produces a 0. Lower voltage equates to a leaner fuel mixture in the eyes of the ECM. In some circumstances, the ECM will see this low voltage as "too low" and trigger the code despite the fact that the engine is running rich enough. The IED's take advantage of this voltage shift to richen the mixture. So the engine can be running rich and the ECM might still trigger the "sensor low" signal. There are also other reasons that the ECM will trigger the codes that we will try to cover below. Will these codes hurt my bike? These are historic codes and are not active. As long as these are the only engine codes you have and you do not have an active Check Engine light on, they can be safely ignored. Do all bikes get these codes with IED's installed?

But I suspect there is an exhaust leak somewhere in the rear cylinder.

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Welcome, fellow car enthusiasts! Today, we explore a common trouble code in automotive diagnostics that can be puzzling: P We also cover its causes, severity, potential solutions, and estimated breakdown of repair costs. The P code indicates that the oxygen sensor Bank 2, Sensor 2 detects a voltage lower than the specified range. This sensor is typically located before the catalytic converter on the side of the engine with cylinder bank 2. It sends voltage signals to the engine control module ECM , providing feedback on the oxygen content. Based on this information, the ECM adjusts the fuel mixture to achieve optimal combustion and ensures the proper functioning of the emission control system.

P0151 harley

Harley diagnostic trouble codes make identifying a particular problem in your motorcycle easier. Therefore, hundreds of these fault codes exist, indicating problems with the carburetor, engine, battery, sensors, and fuel injector. But what is the Harley code P? The code displayed due to a faulty rear oxygen sensor. Typically, this code will appear when the engine control module detects low voltage for the bank 2 sensor 1. This could be due to an exhaust leak or a shorted O2 sensor circuit. So then, how do you diagnose the Harley P code and fix it? This is a diagnostic trouble code that pops up when the ECM detects a low voltage at the rear oxygen O2 sensor. The low voltage issue is due to excess oxygen in the exhaust.

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How many miles on the plugs? The processor is basiclly the go between from the electrical to the sensors and injectors. Don't historical codes mean there is a problem? As long as these are the only engine codes you have and you do not have an active Check Engine light on, they can be safely ignored. One other thing comes to mind here. Find all posts by jjdaly. Originally Posted by steelpony This normally would mean that the 02 sensor is seeing an AFR leaner than The primary triggers are exhaust leaks and loose O2 sensors. Cooler EGT during startup, cooler weather or during some dyno testing with cooling fans can result in. Email this Page. These are historic codes and are not active. For a better experience, please enable JavaScript in your browser before proceeding. I knew better than something wasn't right. Maybe i'll try running it without the Cobra unit to try..

The codes are specifically listed as P and P codes. The description in the Service Manual is: P Front O2 sensor low or engine running lean P Rear O2 sensor low or engine running lean The key point to look at here is "O2 sensor low" when analyzing what is happening with the IED's in place.

Last edited: Mar 7, Since I did this the check engine light has not come back on. Visit CoolBreeze's homepage! I had to unplug them, plug the processor in OK, so you aren't using resisters to "fool" the processor and you have two male and two female plugs that go inline to the injectors from the unit. Fill the tank and notice the check engine light is on. Click to expand This normally would mean that the 02 sensor is seeing an AFR leaner than It's running a little rough and is low on gas so, I drive the 5 miles down the road to the gas station. The time now is AM. Wooden Rat Replies. Check codes when I get to the office.