Find The Best Deals For Oxygen O2 Sensor. Compare Prices Online And Save Today This Nissan O2 Sensor Simulator is adjustable, making you enable to adjust the Air Fuel Ratio within certain range yet complies with the requirement of Powertrain Control Module. Notes. In case of a single oxygen sensor or dual pipe exhaust system fitted with two oxygen sensors only, the oxygen sensor simulator taps to these ports Nissan Maxima oxygen sensor simulator will allow you to drive without cat and still keep the service light off. A popular alteration is to decat the exhaust or install an aftermarket header, to free up the HP. Exhaust gas is controlled through 2 to up to 4 air fuel sensors. The precat sensor controls the fuel management system and aftercat.
Nissan Pathfinder oxygen sensor simulator will allow you to drive without converter and still keep the MIL light off. A popular modification is to decat the exhaust or install an aftermarket header, to free up the power output. Exhaust gas is controlled through 2 to up to 4 exhaust o2 sensors. The upstream sensor controls the fuel management. This Nissan Frontier O2 Sensor Simulator is adjustable, making you enable to adjust the Air Fuel Ratio within certain range yet complies with the requirement of PCM. Notes. In case of a single oxygen sensor or dual pipe exhaust system fitted with two lambda sensors only, the oxygen sensor simulator taps to these ports Custom crafted Titan O2 sensor simulator /is intended to cure Oxygen sensor related check engine light trouble codes/ s are engineered for hassle-free installation and to beef up your Nissan. Take your Titan to the next level in respect of HP /while getting rid of MIL, CEL issue/ and fuel efficiency /after O2 sensor trouble code cancelled/
I have an O2 simulator, its not the mossy one but its the same principle; Ihad to install it when I got my hotshot headers( no cat), the O2 sensor stayed in the pre-welded bung, you just havr to cut the signal wire & attach it to the O2 sim Here's a link showing how to build your own oxygen sensor simulator: O2 Sensor Simulator. The link at the top of that page to Casper's Electronics doesn't work, but Casper's sells a unit for Nissans for $49.95 (you'll need 2). This link should work: Casper's Nissan O2 Sim allsun Lambda Tester & Simulator O2 Oxygen Sensor Automotive Diagnosic Tool Tests Zirconia Titania Lambda Sensors & ECU Test 1,2,3 and 4 Wires Sensors Durable 5.0 out of 5 stars 7 $43.50 $ 43 . 5 O2 Simulator Mini Cat, Angled, Straight Cel Fix, Big Daddies Garage stainless steel Oxygen Sensor Simulator is used to clear p0420 / p0430 codes for bad or missing catalytic converter
on my work car, 98 mazda 626 4 cyl, i was getting an o2 sesnor code for the 2nd 02 sensor, (sensor b4 and after the pre cat), got a new sensor and nothing, this must mean that its my acutal pre cat which is really expensive. so i was looking on a protege forum site and they have a do it yourself o2 eliminator thing to trick the computer to thinking the cat is doing its job. even though the. Do you occasionally get code P0420 - catalytic converter low efficiency? This $3 electrical circuit may fix the problem permanently by electrically smoothin.. 1 thought on O2 Sensor Simulator 2006 Nissan Altima Jerry November 20, 2018 at 8:50 am Yes the pre cat will breakdown and re enter engine due to egr designed to be directly from exhaust manifold by exhaust valve timing..sucks it right back in when you let off the gas.common 2.5 problem..you need O.2 simulator s or offset rear o2. Get these O2 sensor spacers here! http://amzn.to/2owraT9If you have an OBDII vehicle (1996 or later), and you have bad catalytic converters or don't have any..
Automotive-leader 234-5060 O2 Oxygen Sensor Upstream Wideband AFR Sensor Replaces PLX AEM 30-2001 30-4100 for Nissan 04-09 Altima Maxima Murano Quest 04-06 Titan; 06-08 M35 06-10 M45 Q45 QX56 G35 350
In this video I will show you how and Oxygen Sensor aka air fuel ratio sensor works, how the heating element ground power and the signal wire work and a hack.. The ST05 Oxygen Sensor Tester and Simulator is an easy-to-use tool for testing and diagnosing problems with any oxygen sensor (also known as lambda sensors). This tool can help you quickly determine whether the sensor is defective and needs replacement. The ST05 is compatible with all types of oxygen sensors: Zirconia, Titania 1 volt, Titania 5. Amazon.com: O2 Sensor Simulator. Skip to main content. Try Prime Hello, Sign in Kwiksen Oxygen O2 Sensor 234-4308 Upstream Replacement for Infiniti FX35 FX45 M45 Q45 Nissan 350Z Pathfinder 2003 2004. 3.9 out of 5 stars 4. $22.59 $ 22. 59. FREE Shipping The O2 Simulator simply screws into your existing exhaust pipe using the same thread port where your post cat sensor is located. Installation is easy, first disconnect the oxygen sensor and unscrew it. Second, screw back in the O2 Simulator, then screw in the oxygen sensor, reconnect the oxygen sensor, thats it your done
Here is a quick video I made on how you can test an Oxygen Sensor and also what different types of sensors are out there and whats the job of each wire on th.. TUPARTS Oxygen Sensor O2 234-5700 13675 Fit for Infiniti FX35 3.5L 04-06, for Infiniti G35 3.5L 04-07, for Nissan 350Z 3.5L 05-06, for Nissan Altima 2.5L 04-06 Upstream + Downstream 2pcs 4.0 out of 5 stars 5 This is another option for buying O2 Simulator. They have been testing and fully working on 2002-2003 5thgen Maximas. Should also work on 2004-2008 6thgen Maximas as well P0138 : O2 oxygen sensor circuit high voltage (bank1, sensor2) P0158 : O2 oxygen sensor circuit high voltage (bank2, sensor2) So the sim may not work properly; i also notice that the led blink very fast instead of 2-3 between each blink, i found this info on the o2sim forum : led is blinking fast when votage less than 9v
Here's how to modify your car's oxygen sensor to get rid of a P0420 OBDII code, clear the check engine light and pass an emissions test.The P0420 code is thr.. Get Top Products With Fast And Free Shipping For Many Items On eBay. But Did You Check eBay? Check Out Top Brands On eBay
- Our simulator simply is screwed on to your existing O2 sensor and the assembly is replaced into the O2 bung. - Clear the code (Reset Battery) and your set! - Easier to install and more reliable than an electrical device! NOTE: This product is NOT a guaranteed fix or solution to check engine lights when running with out a cat 6. Connect (splice) the O2 Simulator Black wire to O2 sensor Ground. 7. Connect (splice) O2 Simulator Red wire to O2 sensor +12V. 8. Cut the sensor's signal wire completely. **The side that leads to the O2 sensor should be taped off. It will not be used.** NOTE: If you have single exhaust and/or only one secondary O2 sensor, you will only use. o2 sensor simulator 36 Results; Price - OK. Ship From. In stock. US$30.44 US$45.66 33% Off Car Air Fuel A/F Ratio O2 Oxygen Sensor for Nissan Altima 2013-2017 2349134 1 review COD. US$24.14 O2 Oxygen Sensor For Toyota Sienna Camry for Lexus RX300 G1R 2349009 8946748011 1 review COD
does anybody know the color codes for the 4 o2 sensor wires on the 03 350z. 02 simulator wiring. Jump to Latest Follow Welcome to Nissan Club, one of the largest Nissan forum communities. Discussion, reviews, maintenance and more. Full Forum Listing. Explore Our Forums Cut the harness off of the O2 sensor as close as possible to have as much wire to work with as you want. Make sure to plug the empty O2 sensor bung. I went to AutoZone and got an oil drain plug (part# 050-090.1) Step four: Build the O2 simulator. Make sure you solder all connections. None of this twisted wires and electrical tape crap Find great deals on eBay for o2 simulator. Shop with confidence. o2 simulator cat delete o2 simulator chevy o2 sensor simulator o2 sensor spacer o2 simulator bmw o2 spacer o2 sensor bypass simulator o2 simulator nissan. Include description. Category. BMW E46 M3 Rear Manifold Oxygen Sensor O2 Post Cat W/ Simulator Oem 2001-2006. Pre. M18 O2 Sensor Spacer Mechanical Simulator 304 Stainless Steel 45mm Long - Pack of 10 Retail: $129.95 Sale Price: $100.9 just had a chance to look under the truck when i installed the banks exhaust. the cats are part of the exhaust manifold and there is a separate ~1 foot section of piping that connects to the rest of the exhaust (y pipe, muffler, tailpipe). in this section, there is a resonator and an O2 sensor on each pipe. thus the restriction would still be.
Learn How to Check an Oxygen Sensor. Learning how to check an oxygen sensor (O2) will help you confirm a potential problem with the sensor in your vehicle before you spend time and money replacing a unit that might not even need a replacement in the first place. Oxygen sensors detect the amount of oxygen content in the exhaust stream and turn this information into a voltage signal that your. The oxygen sensor in your vehicle controls the air to fuel ratio. Faking out an oxygen sensor refers to the process of bypassing the sensor so that the sensor does not relay the correct information to the system's computer. This is especially useful if you are trying to manually override the air and fuel. ALWAYS follow these tips when installing O2 sensors! These oxygen sensors are very expensive, sensitive, and have to be handled with care. They are almost al..
. The new cars computers run rich and then lean on purpose to test rear o2 function. The sims report back a voltage range that is acceptable to the ECU. When the car runs its test the voltage will not change and you will still pop a 0420/0430 code Nissan Titian emsissions locations shown. EVAP, Oxygen sensors and more. A great starting point for a DIY repair. shown is a 2004 5.6 L VK56DE V8 Donate:Payp.. Nissan 350Z V6 3.5L Upstream O2 Oxygen Sensor: 2004-2006: Nissan: Altima: Nissan Altima L4 2.5L Upstream O2 Oxygen Sensor: 2005-2006: Nissan: Altima: Nissan Altima V6 3.5L Upstream O2 Oxygen Sensor: 2005-2006: Nissan: Armada: Nissan Armada V8 5.6L Upstream O2 Oxygen Sensor: 2005-2006: Nissan: Frontier: Nissan Frontier V6 4.0L Upstream O2 Oxygen. 2005-2006 Nissan Altima with 3.5 Engine Air/Fuel Ratio and O2 Sensor Location 2005-2006 Nissan Altima with 3.5 Engine Air/Fuel Ratio and O2 Sensor Locatio
Chevy Compatible O2 Oxygen Sensor Lamba Simulator Emulator Bypass P0420 Delete. $29.00. Free shipping. Downstream For 2003-07 Nissan Murano 3.5L V6 O2 02 Oxygen Sensor 2Pcs. $24.71. Was: $38.89. Free shipping. or Best Offer. (17) 17 product ratings - NEW OEM DENSO 234-9041 Air Fuel Ratio Oxygen Sensor-OE Style FOR LEXUS & TOYOTA. $102. Use only a URD O2 Sensor Simulator on these vehicles to avoid poor performance, drivability issues and poor MPG. I agree that a true simulator probably wouldn't work, for the reason stated above about calibrating the front wideband. You need to be able to intercept the signal and modify it, instead of a 100% falsely generated signal URD\'s primary market focus is Toyota family vehicles and we manufacture most of our product line for that market. We have been getting requests for our sim application for other vehicle brands and have not made a UNIVERSAL application that will work on any vehicle with a 0-1 volt rear O2 sensor. The UNIVERSAL device [ Bypassing an oxygen sensor--also called an O2 sensor--can only be done using a dummy O2 sensor. Oxygen sensors are part of the vehicle's emissions control system and it may or may not be legal to replace the O2 sensor with a dummy sensor. If you use your vehicle for off-road racing or you are experienced with. O2 Simulator Angled Cel Fix, Big Daddies Garage Angled Rear o2 Sensor Simulator is best to clear p0420 / p0430 codes for bad or missing catalytic converters. Just screws in no complicated wiring, this o2 simulator spaces the oxygen sensor precisely the exact distance out of the exhaust flow for a precise reading by your oxygen sensor, easy to install
1 product rating - Automotive Oxygen Sensor Tester Simulator Zirconia Titania Portable Lambda Meter. $44.80. From China. Was: Previous Price $66.87. if i have my facts right, the first o2 sensor tells the engine if it is running rich or lean. the second just tells the computer the cat is working b/c there will be more o2 sensed by the first than the second. if the 2 readings are the same, then the comp. says bad cat.the guy at the muffler shop PROBOBLY doesn't have alot of experience with the sensors that feed data to the ecu, that would.
Step 2. Locate the o2 sensor signal wire Look at the wiring of the o2 sensor in the FSM for your year to make sure that the wire colors correspond, but typically the black wire on your o2 sensor will be the signal wire, this is the one you want! Step 3. Cut the sensor wire and solder/crimp the resistor in to the signal wire. Step 4 Re: O2 sensor simulator for hfc or gutted cats I'm talking about the precats that are hangin off the headers. Stillen lip kit, black housed headlamps, 370z 18s, 350z 17's on drs, blue led fogs, aem wideband o2,apexi safcll, 75shot zex wet kit, skunk2 cans, custom y&b pipes, 3rd cat & resonator delete, magnaflow precats, nwp spacers, kn cai, and. The O2 sensor in your vehicle monitors the exhaust gases coming out of the engine. It determines the amount of oxygen in the gases, which indicates how well the fuel is being burned. The O2 sensor then sends information to the electronic control unit, or ECU, the vehicle's computer. The ECU then adjusts the. . Or, (B) Use a 'O2 Sensor Simulator' It gets plugged in, in place of the lower O2 sensor Oxygen Sensor Circuit High Voltage (Bank 2 Sensor 2) What the P0158 code means. The P0158 trouble code appears when the sensor has remained at a high voltage for too long. This oxygen sensor is located behind the catalytic converter
200 matches. ($19.15 - $219.58) Find great deals on the latest styles of Oxygen sensor simulator. Compare prices & save money on Automotive Parts Oxygen Sensor Simulator Schematic Making Your Own Rear O2 Bypass Simulator Dsmtuners Diy 02 Simulator And Junkyard Turbo Tech O2 Sensor Mod Diffe Yamaha Star Stryker O2 Sensor Simulators Complete Guide My350z Com Nissan 350z And 370z Forum Discussion How to make your own rear o2 simulator for 5 toyota 4runner forum largest chippernut diy. 200 matches. ($15.99 - $863.15) Find great deals on the latest styles of O2 simulator. Compare prices & save money on Automotive Parts . Easy to use parts catalog
US$30.44 US$45.66 33% Off Car Air Fuel A/F Ratio O2 Oxygen Sensor for Nissan Altima 2013-2017 2349134 1 review COD US$24.14 O2 Oxygen Sensor For Toyota Sienna Camry for Lexus RX300 G1R 2349009 8946748011 1 review CO A sensor is needed for this next action, and the FIXD Sensor is perfect for it. Scan codes and document freeze frame data then clear codes to verify failure. Note if the O2 sensor is rapidly or slowly switching from low to high voltage. This could indicate a faulty O2 sensor. Check for any broken or shorted wiring in relation to the O2 sensor The best potting compound can seal your oxygen sensor simulator to water, dust, and acids. If you have more than 4 cylinders, in most cases, you will need two pieces of my devices. 04' Nissan Maxima - [Supercharged w/ HR Swapped Motor & Fully Built Auto Trans One of the cars has after-cat O2 sensor simulator, which prevents check engine light appearing on dashboard. Another car's check engine light comes on after each fuel up, I have OBD2 adapter and I reset warning light every time. I've put multiple years on these cars and they are running OK. Also it's much better to run car without cat than with.
Upstream Downstream O2 Oxygen Sensor For Chevy 1500 5.3L GMC 234 4668 Upstream Downstream O2: $24.99. Downstream Oxygen O2 Upstream 234 4668 Sensor GMC 1500 Chevy For 5.3L 5.3L For Chevy Downstream Sensor GMC 4668 Oxygen 1500 Upstream O2 23 Therefore, the downstream oxygen sensor (sensor 2) should produce a steady voltage of approximately 0.45 volts. When trouble code P0138 is set, this indicates that there is a high voltage (steadily above .9 volts) for more than 10 seconds indicating a lack of oxygen in the exhaust stream and an abundance of fuel at sensor 2 on the bank 1 of the. 2Pcs Air Fuel Ratio Oxygen Sensor Upstream For 2001 2002 2003 Toyota Sienna 3.0L. $51.79. Trending at $53.59. 2PCS Downstream O2 Oxygen Sensor For Nissan Sentra Versa Altima Infiniti G35 G37. $30.99. Free shipping. Only 2 left. Watch. Upstream Oxygen O2 Sensor For Nissan Altima 2.5L 3.5L Titan 5.6L 2004 2005 2006 The oxygen sensor will only generate an accurate signal when it has reached a minimum operating temperature of 400'C (7500F). To quickly warm up the oxygen sensor and to keep it hot at idle and light load conditions, the oxygen sensor has a heater built into it. This heater is controlled by the ECM Get 02 Sensor Simulator With Fast And Free Shipping For Many Items On eBay. But Did You Check eBay? Check Out 02 Sensor Simulator On eBay
The function of the Oxygen Sensor Simulator or O2 Sim is to mimic the signal of an O2 sensor sensing the proper levels of emissions. The O2 sim has an output signal wire that will replace the O2 sensor's signal wire to the engine control module Our rear O2 sensor simulator is a device that conditions the signal from the rear O2 sensor and keeps that signal in the proper range the ECU is expecting to see from a properly functioning and healthy catalytic converter. Our device takes a slightly different approach than most of the other devices on the market Oxygen Sensor Simulator+header=no mil? Quote; Post by s14db » Sun Dec 21, 2003 4:45 pm . Has anyone used a Oxygen Sensor Simulator with a hotshot header with any sucess? Top. NICOclub's Nissan forums and Infiniti forums and all affiliated sites are the property of HDS Holdings, Inc Buy Oxygen sensor extender spacer Simulator Test Pipe O2 Bung universal p0420 cel ford dodge honda nissan chevy toyota catalytic converter at Desertcart. FREE Delivery Across Oman. FREE Returns. ProductId : 26299890 This usually tricks the o2 sensor into believing the cat is working correctly. I did this, but I think I damaged my o2 sensor in the process, because then it started throwing a P0141, which means the o2 sensor heater is bad. So I decided the bypass the o2 sensor entirely. I bought an o2 sensor simulator from o2sim.com
The O2 Sensor MIL Eliminator for the 1996-2004 Ford Mustang GT/Cobra/Mach 1 allow exhaust system modifications such as high flow cats, no cats, long tube headers, H and X pipes without triggering a Check Engine Light by simulating the oxygen sensor signal to the computer The oxygen sensor transmits the data to the vehicle's PCM to maintain the optimal air to fuel ratio for your engine. A bad or failing oxygen sensor will have a negative impact on environmental emissions and engine performance, so there are a 3 things to watch out for before your oxygen sensor completely fails Oxygen Sensor Simulators. Jump to Latest I found a sensor that says its for a nissan L4 engine but it is a 3 wire harness. Again I cant remember how many it has. I will have to look. The only wire you don't connect to the simulator is the heater that isnt giving out 12v. If you google 02 simulator, you can check out the site and. The ecu with a narrowband o2 sensor, when in closed loop mode, will then lean on the fuel map if it is receiving a rich signal from the o2 sensor till its stoic. The opposite would be true if the sensor was telling the ECU that it was currently running lean, it would richen the fuel map till the o2 sensor was reading stoic
High Quality Oxygen Sensor Lambda O2 SENSOR 22693-1NA0A For INFINITI EX35 FX35 G35 M35 FOR NISSAN 350Z 370Z 226931NA0A CAD $56.06 - 63.76 / Piece NEW Mass Air Flow Sensor meter MAF AFH55-M10 AFH55M10 for NISSAN D21 PICKUP 3M4O Related:o2 sensor simulator o2 sensor simulator chevy o2 sensor simulator ford o2 sensor simulator jeep o2 sensor simulator chevy silverado o2 sensor simulator dodge o2 sensor simulator honda o2 sensor simulator nissan o2 sensor simulator toyota o2 sensor simulator gm O2 sensor simulator???? Help. Any one that anyone recommends?? I have seen the ones that wire into the O2 sensor and send the signal to the ECU and I have also seen a spacer that goes in the O2 sensor spot and helps to make it pass emissions. a 1g, a Nissan S12, and an '87 Trans Am: Tue Feb 23, 2010 5:58 pm: StangKiller. Power Drifter. How to repair P0136 code Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2. The Heated Oxygen Sensor 2 (HO2S2) (Downstream), after the three-way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. For P0136 NISSAN O2 Sensor Circuit Malfunction Bank 1 Sensor 2
wire by testing. The sensor can have 2, 3 or 4 wires (some can have 5 or 6- these are rare), and you have to know which one is the signal wire. The most common configuration for modern cars is 4 wires. If you have 4 wires they will be: Heater 12 Volts + Heater ground Oxygen sensor signal + Oxygen sensor signal groun You can remove the oxygen sensor much easier with the exhaust system above 120 F (48 C). Step 2. Lift the front of your Chevy Venture using a floor jack and support it on 2 jack stands. Step 3. Put on your goggles and locate the sensor or sensors you want to replace. You will find one on the front exhaust pipe, between the exhaust manifold and. . Front Tube Assembly TP010105 Bank 2 (B2) B2 Pre-cat Bank 1 (B1) B1 Pre-Cat H02S1-B2 Front O2 sensor B2 (BLUE) H02S2-B1 Rear.
Nissan & Infiniti; PSA Group. All PSA Group; Opel & Vauxhall; Renault; Subaru; Toyota & Lexus; Oxygen Sensor. O2 Sensor Extension Cables; O2 Sensor Harness; Shop By Price. $0.00 - $15.00 1996-2004 Ford Mustang GT Cobra O2 Oxygen Sensor Simulator MIL Eliminators $34.99. Quick view. 1. Try to get Nissan to replace it under the 8/80 long term emissions defect warranty or any other extended warranty you have. 2. Try replacing the Bank 2 downstream O2 sensor (sensor 2), clear the codes, and see the code comes back. 3. Get an O2 simulator from O2 Simulator, E-commerce to trick the ECU into thinking the pre-cat is working fine. 4 Lexus Compatible O2 Oxygen Sensor Lamba Simulator Emulator Bypass P0420 Delete RYCO MOTO Street Legal Kit 8101 Can-Am Maverick Commander, W35 OMC Evinrude Johnson 301983 Washer, Mass Air Flow Sensor MAF 245-2118 for 2002-2003 Nissan Altima Sentra 2.5L L4 GAS BOSCH Exhaust & Emission : Oxygen (O2) Sensor Auto Parts ALL THE PARTS YOUR CAR WILL EVER NEED Show Prices In US Dollars ($) Australian Dollars (AU$) Brazilian Real (R$) Canadian Dollars (CAD$) Swiss Francs (CHF) Euros (€) British Pounds (£) Japanese Yen (¥) Mexican Pesos (Mex$) Norwegian Krone (kr) New Zealand Dollars (NZ$ Even if the switching characteristics of air fuel ratio (A/F) sensor 1 shift, the air-fuel ratio is controlled to stoichiometric by the signal from heated oxygen sensor 2. Quite a mouthful. Essentially both sensors (1 &2) are in fact a type of oxygen sensor but there is a distinct difference in outputs based on the gasses sampled
The O2 sensor is mounted in the exhaust stream, usually with one sensor not far from the exhaust manifold and one farther down after the catalytic converter. The sensor measures the oxygen content of the exhaust gases and compares it to the oxygen proportion in ambient air, and sends information on the gases to the engine computer Ford F150 Oxygen Sensor Your full-size F-150 is the star of Ford's F-series. You can make sure its performance continues to shine by replacing your outdated O2 sensor with a new Ford F150 oxygen sensor from AutoZone, optimizing the fuel-air mixture and maximizing your gas mileage
The lambda sensor, also called an oxygen sensor, is a small probe located on the car exhaust, between the exhaust manifold and the catalytic converter.It was developed by Volvo in the 70s.. If you own a newer car, it will be equipped with 2 lambda sensors. In that case, the second sensor will be located right behind the catalytic converter The rear oxygen sensor (the one behind the converter) monitors how much oxygen is coming out of the converter at any time. A healthy converter will use a lot of oxygen, and so the rear oxygen sensor will see that there is little oxygen coming out of the back of the converter. In this situation, the check engine light will not come on to. Oxygen (O2) Sensor Socket / Wrench. Oxygen (O2) Sensor Thread Repair. Intentionally blank: Intentionally blank: Related Parts. FORD > 2001 > F-150 > 4.2L V6 > Exhaust & Emission > Oxygen (O2) Sensor. Price: Alternate: No parts for vehicles in selected markets. Economy
O2 Simulator Installation Instructions: Below are the instructions for the O2 Sim install that came with my HP/Toyomoto header/midpipe. The signal wire on the O2 sensor side of the plug is blue and corresponds to the white wire on the harness side