Downstream O2 sensor assesses the catalitic converter performance. The actual location for every unit varies slightly, but at least one oxygen sensor will be installed near your exhaust manifold assembly. My son was able to diagnose it with a very expensive scantool. Do not wait any more, start your shopping experience right now. I could not find the service manual you referenced.
I replaced the 2 sensor. Are you replacing upstream or downstream 02 sensor? If you don't have a code scanner, I believe there are also other tests that can be done with a digital multimeter. Once you know the cause of your problem please feel free to call us toll free at 888-844-3393. Jul 29, 2011 there is a downstream one after the catalytic converter but before the muffler. All of this is in the front of the manual.
Jan 04, 2009 Well, Bank 1 is the passenger side of the vehicle. Don't waste any of your vehicle's potential by driving with a fouled o2 sensor. Parts cannot be returned after they have been installed. As the sensor takes its measurement, it also delivers that info to the computer so it can relay the right changes it needs to make. Does anyone have access to this? With a code scanner vs scanner you can observe the voltage that the sensor is putting out. After reading some more online, there are ways to test the 02 sensor with a butane torch and volt meter, so I may do that next time before replacing any sensors. Long story short a friend was helping me work on my vehicle and instead of taking his time and releasing the latch on the harness he pulled on it ripping the wires out of the connector going to the wiring harness I have looked all over town, surrounding junk yards and even on line for a replacement with no luck.
Upstream O2 sensor controls air-to-fuel ratio to yield a small excess oxygen. Which one is Bank 1 sensor 2? I checked the website and they show 2 different sensors for downstream. I know 1 is in plain sight under the hood. You can check other after market manuals on this but my experience shows that those books are not nearly as good. It will not pass Pa Inspection in this condition.
Posted on Sep 23, 2009 I have a 2003 S10 and the downstream O2 sensor failed giving the same code. Specific electrical tests can be performed with a voltmeter or another specialized Nissan tool that can determine whether or not your oxygen sensor is within its correct operating ranges. Apr 11, 2011 P0138 - Oxygen Sensor Circuit High Voltage Bank1, Sensor2 P0139 - Oxygen Sensor Circuit Slow Response Bank1, Sensor2 The Heated Oxygen Sensor 1 or 2 located rear of catalytic converter produces an output signal relative to oxygen storage capacity of catalytic converter. Sure beats buying all 3 sensors. Anything else i may try? Your o2 sensor for Nissan Quest Minivan is central to your vehicle's fuel economy and emissions control system. Contact us with any questions before installing the parts. In general for O2's, I think the voltage should vary between 0.
Well be happy to see if we carry the parts needed for the repair. Install note: You may be required to reset the vehicle computer after installation of this part. Be sure to take advantage of our Loan-a-Tool Program when you visit your local AutoZone. Ask our knowledgeable staff for the right parts for your Quest Minivan. Same Day Store Pickup in most cases is available when you place an order online.
The downstream is further down in the exhaust pipe. Nissan Scope Technician- 10+ years experience in Nissan dealership. The connectors look good and the O2 Sensor was by Denso and exact fit. Read up, be careful and good luck. Also, we have dedicated customer service. I believe there are a few basic tests that can be done easily.
Our sensors measure the oxygen in your vehicle's exhaust and ensure your minivan isn't using too much gas. . The one I replaced is on passenger side underneath it plugs in under a small skid plate. If I'm reading it right My wiring harness has 4 and the new 02 sensor has 4. However that does not appear to be downstream of the converter. The upstream is in the exhaust manifold. The upstream sensor is pretty easy- the downstream can be a little more difficult, but is not too bad.