Unscrewed it and let it hang. If the oxygen in the exhaust gas increases, the air-fuel ratio becomes Lean. Thanks again for all the help sergey85 and NissanTech, it really did help. A tsb is not a recall. First, start engine and warm up. Anyone have a good part number for these O2 sensors? The information contained on this site is presented for informational purposes only. The shortest its been off was about two days.
At one point the dealer said all of the O2 Sensors would go. My Reset tool doesn't tell me where the O2 Sensor is located. This sensor controls engine operation such as fuel cut. It uses this data to tune the engine on the fly. The extreme heat from the exhaust can really damage a wiring harness, espescially the connection. Did anyone else who replaced a rear O2 sensor have trouble getting to all the wiring harnesses? The extreme heat from the exhaust can really damage a wiring harness, espescially the connection.
This is often the cause of P0140. The Engine Control Module adjusts the fuel injection time so that the air-fuel ratio is nearly stoichiometric. While not car-threatening, it's good to take care of this right away to improve gas mileage. This oil coats the sensor and can cause it to become inaccurate. P0120 Nissan Description The throttle position sensor responds to the accelerator pedal movement. I untaped the two at this point.
Sensor 2 monitors emissions after the catalytic converter. The reason is this: The rear or post catalytic converter Oxygen sensor does not affect fuel deliver this is an exception on Chryslers. If I replace those specific o2 sensor, would that fix the problem? You should be able to listen and find it. They are well known to burn out soon after being changed. Can you people help me locating the correct O2S, buying a new correct one and other stuff i should know.
Only thing it will cost me is the gas to drive the truck down to the dealership and back. . Check for air intake plumbing leaks and for exhaust leaks first before replacement, though. Idle position of the throttle valve is determined by the receiving the signal from the throttle position sensor. A three way catalyst converter Manifold with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2. You should be able to listen and find it.
If you have any doubt as to repairs on your vehicle, please contact your technician. Spark plugs typically need to be replaced every season or 25 hours of use. Code Data: P0138 Bank 1 Sensor 2 Circuit High Input Rich Shift Pending Code: P0139 Bank 1 Sensor 2 Slow Response I have a shop manual and have kind of figured out which ones are the players however, I don't have any part numbers. Sensor 2 monitors emissions after the catalytic converter. Nissan Serena P0140 Causes There are a lot of different things that can cause P0140 to be thrown in the Serena. Man, talk about annoying sorry to resurrect such an old thread, but shockingly it was the only one with 'P0140' in the title. Replacing it should fix the 5 Volt reference short.
Got back under and screwed the new sensor in and yes, I didn't forget the Anti-seize for the threads and then went to work on the clips. If the oxygen in the exhaust gas decreases, the air-fuel ratio becomes Rich. Replacing the oxygen O2 sensors may sometimes fix the code, but in most cases the catalytic convert needs to be replaced to fix the problem. What are your experinces with this situation? Scott Man, talk about annoying sorry to resurrect such an old thread, but shockingly it was the only one with 'P0140' in the title. Nissan Pathfinder P0140 Causes There are a lot of different things that can cause P0140 to be thrown in the Pathfinder. The changing gap causes the magnetic field near the sensor to change. These problems can cause erratic drive complaints, which can compromise a driver's safety.
If you'd rather try to simply replace the sensor, I believe is the correct part to solve your P0140 code. If your are for a different car, select that vehicle series before searching for the diagnostic codes because not all used by one manufacture are used by the other makes. So I ended up just cutting the wire and pulling the old one out. Simply unplug each sensor one at a time until the 5 Volts reappears. If the oxygen in the exhaust gas increases, the air-fuel ratio becomes Lean. I'd appreciate any input you guys can give.
Hey, I have having those codes for 3500km will driving from Montreal to Edmonton. Material may not be copied or reprinted without written permission. Plus the ones on the back of the engine are insanely hard to reach. P0430 Nissan Description The Engine Control Module monitors the switching frequency ratio of heated oxygen sensors 1 front O2 sensor and heated oxygen sensors 2 rear O2 sensor. If the oxygen in the exhaust gas increases, the air-fuel ratio becomes Lean. The camshaft position sensor senses the piston position.
If you feel there is anything that you could do to improve or add to this article, please leave a comment below. Tech notes Nissan models with distributor the camshaft position sensor is part of the distributor. But damn if the O2 sensors aren't the most difficult to remove of any car I've ever worked on in my life! Now don't ask yourself; What should you do with P0140 code? It came loose the first time. I drove down the freeway for about 25 minutes, exited and pulled into a Micky D's for a cup of coffee. Normally the voltage should switch slowly above and below. You have to go easy, it's not a clear path.