I have a Honda Accord 05 LX Manual 5-Spd. 4cylinder 4-dr sedan. Also I'm getting codes p0420 and p0139. The Engine Light Came on 3 weeks ago for 2.5 days and then went off after I jacked up the car an … read moreMar 8, 2019 · P0139 is a common OBDII code that occurs in many vehicles, including the Honda CR-V. The code is triggered when there is an issue with the response time from the oxygen (O2) sensor when switching voltage levels. The Oxygen sensors are responsible for helping the ECM meter oxygen levels in the exhaust, and helping to. May 4, 2020 ... Change both S1 and S2 if you have any S2 codes. I video to talk about issue with O2 sensor codes and why both should be changed.How to Fix HONDA P0139 Engine Code in 3 Minutes [2 DIY Methods / Only $8.24] - YouTube. nonda. 85.3K subscribers. Subscribed. 119. 21K views 2 years ago …Dec 1, 2018 ... Step by step instructions. Enjoy then comment below. Thank you.Honda is creating a dedicated EV division for the first time, as it attempts to catch up to its rivals in electrification of its lineup. Honda is establishing a division dedicated ...Normal causes for the P0139 Code: There could be a leak in your vehicle’s fuel injection system, which can cause extra fuel to be left in the exhaust system . Faulty rear O2 sensor wiring. The wiring could simply be loose or worn. Bad catalytic converter.P0139 is a common OBDII code that occurs in many vehicles, including the Honda Fit.The code is triggered when there is an issue with the response time from the oxygen (O2) sensor when switching voltage levels. The Oxygen sensors are responsible for helping the ECM meter oxygen levels in the exhaust, and helping to to create the ideal …P0139説明. 加熱された 酸素センサー 2（HO 2 S）、三元触媒（マニホールド）後、それぞれの排気ガス中の酸素レベルを監視 バンク 。. 最適な触媒操作のためには、混合気（空燃比）は理想的な化学量論比の近くに維持されなければならない。. HO 2 S出力電圧は ...Definition of P0139. If your vehicle’s check engine light has come on and you’ve received a P0139 code, it means that the O2 sensor has detected a slow response from the downstream oxygen sensor located after the catalytic converter. This code is specific to bank 1 sensor 2, which is the sensor located on the driver’s side of the vehicle.Hi, jjohnson86, what happened after you installed the new Denso sensor, I have a 2005 Honda accord, happened exactly the same as your wife's, first P0141 then after replaced showed P0139, please let me know.It's State inspection time (due today) so I replaced both B1S2 and B2S2 O2 sensors, with non-foulers installed. I got P0139 and P0159 codes, indicating slow response from the new sensors. I removed the non-foulers, and got a P0420 code, which is what I got 5 years ago. I replaced the non-foulers on B1S2, and the P0139 returned (B2S2 appears to ...Due to factors beyond the control of RB The Mechanic, it cannot guarantee against unauthorized modifications of this information. RB The Mechanic assumes no ...Troubleshooting a HONDA P0139 "O2 Sensor Circuit Slow Response (Bank 1, Sensor 2)." code as well as fixes.Looking for Honda dealers around Leesburg, FL? We're the place for you! Check out Jenkins Honda of Leesburg for Honda sales and service. We also have a great …It's State inspection time (due today) so I replaced both B1S2 and B2S2 O2 sensors, with non-foulers installed. I got P0139 and P0159 codes, indicating slow response from the new sensors. I removed the non-foulers, and got a P0420 code, which is what I got 5 years ago. I replaced the non-foulers on B1S2, and the P0139 returned (B2S2 appears …A faulty bank 1 O2 sensor 2 and leaks in the exhaust system are some common causes of the P0139 code. Some common symptoms related to the P0139 code include an illuminated check engine light and …It's State inspection time (due today) so I replaced both B1S2 and B2S2 O2 sensors, with non-foulers installed. I got P0139 and P0159 codes, indicating slow response from the new sensors. I removed the non-foulers, and got a P0420 code, which is what I got 5 years ago. I replaced the non-foulers on B1S2, and the P0139 returned (B2S2 appears to ...May 4, 2020 ... Change both S1 and S2 if you have any S2 codes. I video to talk about issue with O2 sensor codes and why both should be changed.Troubleshooting a HONDA P0138 Code: "Secondary Heated Oxygen Sensor (Secondary HO2S) Circuit High Voltage."DTC P0139: Secondary HO2S (Sensor 2) Slow Response (2005 model) Turn the ignition switch ON (II). Clear the DTC with the HDS. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator fan comes on, then let it idle. Test-drive under these conditions:P 0139 code. Purchased a nice used 2005 Accord 2 door, 2.4 4cyl with 77,000 miles, After we drove off the lot CEL came on. returned to the dealer they fixed it said it was vacuum leak. About 1 week later the CEL came on again, This time I stopped at Advanced auto first, They scanned it and it had a P0139 code, secondary heated o2 …Pilot EXL 2017 Acceleration. New to the forum as well SUV in general. I got my pilot last month and have put around 1000 miles on it. My driving is around 90% city and 10% freeway, most of the time with stop and go traffic. What I've noticed is that my pilot accelerates really slow, revving upward to 3000 rpm from a stop and I can clearly hear ...HondaP0139 Honda DTC P0139 Make: Honda Code: P0139 Definition: Secondary HO2S (Sensor 2) Slow Response Description: With the engine running for at least 2 minutes, coolant temperature at a minimum of 156 F (69 C) and the engine speed a maximum of 4,000 rpm, the secondary HO2S output voltage is 0.05 V or more for at least 10 seconds.If the oxygen in the exhaust gas increases, the air-fuel ratio becomes Lean. The ECM interprets Lean when the HO2S voltage is below 0.45 V. If the oxygen in the exhaust gas decreases, the air-fuel ratio becomes Rich. The ECM interprets Rich when the HO2S voltage is above 0.45 V. P0139 Volkswagen Code - HO2S12 Sensor Circuit …Sep 27, 2023 ... 3:02. Go to channel · How to Fix HONDA P0139 Code: O2 Sensor Circuit Slow Response (Bank 1, Sensor 2). Whyingo•22K views · 5:43. Go to channel ....Honda has issued a service bulletin 13-055 to fix P3400 or P3497 and multiple misfire codes P0301 through P0304) on the vehicles listed below. P3400 and P3497 relate to rocker arm oil pressure switches B and C which measures oil pressure entering the variable cylinder management system (VCM). The VCM system disengages …About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...HONDA > 2006 > PILOT > 3.5L V6 > Exhaust & Emission > Oxygen (O2) Sensor. Price: Alternate: No parts for vehicles in selected markets. Economy . ULTRA-POWER 2344355 Info . Downstream Front. ULTRA-POWER 2344355. $24.79: $0.00 + Sold in packs of 1 x 1: $24.79: Alternate: Quantity: Add to Cart. WALKER PRODUCTS 35034363 OE ...Mar 8, 2019 · P0139 is a common OBDII code that occurs in many vehicles, including the Honda CR-V. The code is triggered when there is an issue with the response time from the oxygen (O2) sensor when switching voltage levels. The Oxygen sensors are responsible for helping the ECM meter oxygen levels in the exhaust, and helping to. Jazz GK ไฟ Engine P0139 โชว์ซะงั้นเสียเงินจนได้#jjsina ️ ️ฝากติดตามช่องด้วยนะจุฟ ️ ️ : https ...How to Fix. Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins. Search for P0139 Honda Questions and Answers. Possible Symptoms. Engine Light ON (or Service Engine Soon Warning Light)Jan 17, 2024 · Popular Mechanics Magazine suggests the following steps to diagnose and troubleshoot the PO139 code issue in a Honda car: 1. Use an OBD-II scanner to retrieve the trouble code information. 2. Check for any loose or damaged electrical connections related to the oxygen sensor (Bank 1 Sensor 2). 3. P0139 code: o2 sensor circuit slow response (bank 1, sensor 2) Help hondacivicforumP0135 supercharged civic kraftwerks Fixing p0139 cel after downpipe installP0139 help. Honda accord sensor 2006 code catalytic converter got 2009 locatedHonda accord 2006 p0139 sensor code .DTC P0139: Secondary HO2S (Sensor 2) Slow Response (2005 model) Turn the ignition switch ON (II). Clear the DTC with the HDS. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator fan comes on, then let it idle. Test-drive under these conditions:360glitch said: P0139 is not a dangerous issue. Your O2 sensor is not seeing enough exhaust gas to make it happy. If you have an adjustable de-fouler you can move the sensor more into the exhaust stream. If this is not possible, check for a P00139 disable within Hondata. I know I have seen it in other tuning software.Dec 11, 2011 ... ... t know the answer. O2 Sensor Replacement for 2006 Honda Accord 4cy SE - P0139 & P0141 Codes. 250K views · 12 years ago ...more. Chris E. 1.71K.Dec 11, 2011 ... ... t know the answer. O2 Sensor Replacement for 2006 Honda Accord 4cy SE - P0139 & P0141 Codes. 250K views · 12 years ago ...more. Chris E. 1.71K.Mechanic for Honda: Ron Z. DTC P0139: Secondary HO2S (Sensor 2) Slow Response. This code is pointing to an intermittant internal fault in the Oxygen Sensor Bank1 Sensor2. If the light was on, but now off, this means the sensor is "on its way out". Eventually this sensor will need to be changed. This sensor is located under the vehicle, …Aug 25, 2021 ... How to replace Bank 1 sensor 2 on Honda Accord 2013 to 2017 P0139 Replace downstream Oxygen sensor. 25K views · 2 years ago #oxygensensor ...El código de falla P0139 se refiere a un problema con el sensor de oxígeno (Sensor 2, bloque 1) de nuestro vehículo. Este código indica que el sensor está presentando una respuesta lenta, lo que puede afectar el rendimiento y la eficiencia del motor. ... P0139 Honda - Código DTC de falla OBD2; Síntomas del código OBD2 P0139. Los ...1790 posts · Joined 2010. #1 · Sep 29, 2013 (Edited) EDIT: Miss typed code, this was a P0139 fault. RESOLUTION: Essentially a slow reading or failing 02 sensor. Doesn't mean the sensor is dead, just something is up making it read differently. Turns out my test pipe defouler was getting clogged with carbon residue.P0139 is a common OBDII code that occurs in many vehicles, including the Honda HR-V.The code is triggered when there is an issue with the response time from the oxygen (O2) sensor when switching voltage levels. The Oxygen sensors are responsible for helping the ECM meter oxygen levels in the exhaust, and helping to to create the ideal …Honda has issued a service bulletin #07-019 to address a P0139 trouble code on the Honda Civic vehicles listed below P0139 (secondary heated oxygen sensor [sensor 2] slow response) stored. The service bulletin states: The ECM/PCM misinterprets the secondary heated oxygen sensor output and sets DTC P0139.If the oxygen in the exhaust gas increases, the air-fuel ratio becomes Lean. The ECM interprets Lean when the HO2S voltage is below 0.45 V. If the oxygen in the exhaust gas decreases, the air-fuel ratio becomes Rich. The ECM interprets Rich when the HO2S voltage is above 0.45 V. P0139 Nissan Code - HO2S12 Slow Response.Pilot EXL 2017 Acceleration. New to the forum as well SUV in general. I got my pilot last month and have put around 1000 miles on it. My driving is around 90% city and 10% freeway, most of the time with stop and go traffic. What I've noticed is that my pilot accelerates really slow, revving upward to 3000 rpm from a stop and I can clearly hear ...P0138 is a common OBDII code that occurs in many vehicles, including the Honda Accord. The code is triggered when: The voltage at the sensor remains above threshold for 20 seconds or more. Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself. There are also some less likely problems that can cause P0138.=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====nonda Auto DIY Center is the biggest ...Diagnostic fault code P0139 indicates that a vehicle’s bank 1/ sensor 2 oxygen sensor has failed to respond in a timely manner, during periods of reduced fueling or fueling cutoff. This code, as a general rule, relates to a vehicle’s bank 1, post-catalyst O2 sensor. This, in turn, suggests that this particular sensor is incapable of ...Feb 8, 2016 · Troubleshooting. CEL Code P0420 This code occurs when the secondary O2 sensor is reading too much exhaust gases. The solution would be to remove the O2 sensor, loosen the lock nut and turn the defouler out 2 turns. Reset ECU. CEL Code P0139 This code occurs when the secondary O2 sensor is not reading enough exhaust gasses. 2005 p0139. Hi everyone! Last Thursday I was driving my 2005 I4 and I got a CEL and took it Advance Auto and I got P0139 - O2 sensor slow to respond. The light went off Sunday and just came on again today. After doing some research, it sounds like I should be replacing the secondary O2 sensor that involves the cat and passenger seat floor ...My Ody threw a P0139 code for slow response from the post converter sensor, so I replaced the sensor about 5K miles ago and no light since. ... by VerticalScope Inc. Content on odyclub.com is generated by its users. odyclub.com is not in any way affiliated with Honda Motor Company VerticalScope Inc., 111 Peter Street, Suite 600, …The code P0139 relates to a connection problem or a sensor problem. When the fuel adjustment reaches to a certain threshold, it will trigger the CEL. Although 15% may sound a lot to you, you need to consider the total fuel trim (STFT and LTFT).To diagnose the P0139 2009 Honda Accord code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.02/21/2024. If you’re experiencing a check engine light with the P0139 code, you’re not alone. This code indicates that there is a problem with the oxygen sensor’s response …2005 p0139. Hi everyone! Last Thursday I was driving my 2005 I4 and I got a CEL and took it Advance Auto and I got P0139 - O2 sensor slow to respond. The light went off Sunday and just came on again today. After doing some research, it sounds like I should be replacing the secondary O2 sensor that involves the cat and passenger seat floor ...If a Honda timing belt breaks while the engine is running, it can cause serious damage to the engine. This is because Hondas have interference engines. If a timing belt breaks in a...This video will show you how to troubleshoot and fix P0138 and P0139 DtcTHIS IS THE BEST AND VERY AFFORDABLE SCAN TOOL. I ONLY RECOMMEND THIS ONE. I USE IT I... =====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code P0139 Saving Repair Parts... P0139 = H02S 12 circuit condition (heated oxygen sensor bank 1 sensor 2 ... 8thcivic.com is an independent Honda enthusiast website owned and operated by VerticalScope Inc. Content on 8thcivic.com is generated by its users. 8thcivic.com is not in any way affiliated with Honda Motor CompanyAlright so was able to clear the code today prior to driving it at hwy speeds for 60 km. Code was p0139 02 sensor circuit slow. Live data for stft between +05-+18. Ltft was about 10ish. ... crvownersclub.com is an independent Honda enthusiast website owned and operated by VerticalScope Inc. Content on crvownersclub.com is generated by its …170 posts · Joined 2013. #1 · Oct 24, 2022 (Edited) I installed the Rv6 catless downpipe shortly after I got my 2013 accord. I used they little L adapter on the O2 sensor and had no issues until now. The L adapter rotted out and ruined the O2 sensor. A new O2 sensor and multiple attempts with different adapters and I can not get rid of the CEL.Jazz GK ไฟ Engine P0139 โชว์ซะงั้นเสียเงินจนได้#jjsina ️ ️ฝากติดตามช่องด้วยนะจุฟ ️ ️ : https ...P0139 Code. hey guys, i'm throwing a CEL and the code on my scangauge II is saying p0139, i have a test pipe with the DIY "defouler" u can make from the spark plug nonfoulers from the parts store. is this the same code everyone else gets from not having a cat or is mine different and should i start investigating the problem. i search on google ...About a month later Engine light came back on with P0139 code. It was raining couple of days. I found a Honda Service Bulletin 07-019 on P0139. It talked about update the PGM-F1 software with HDS. (probably updating ECU). I took it to Honda Dealership right away, the guy said Service Bulletin 07-019 is for American Honda …Hondas are popular vehicles, and choosing one for your next purchase is a smart move. You can find used Hondas for sale in your local area, either from a dealership or for sale by ...Diagnostic fault code P0139 indicates that a vehicle’s bank 1/ sensor 2 oxygen sensor has failed to respond in a timely manner, during periods of reduced fueling or fueling cutoff. This code, as a general rule, relates to a vehicle’s bank 1, post-catalyst O2 sensor.P0139 – O2 Sensor Circuit Slow Response (Bank 1 Sensor 2) P0145 – O2 Sensor Circuit Slow Response (Bank 1 Sensor 3) What is the code P0133 Bank 1 sensor 1? When the P0133 code is set, it means that the O2 sensor isn’t altering the voltage output as it should when the air-fuel ratio changes. For that reason, it’s categorized as having a ...If you’ve recently found yourself staring at your Honda’s radio, unable to unlock it because you don’t have the code, don’t worry – you’re not alone. Many Honda owners face this fr...Feb 8, 2023 ... ... Auto Repair•8.5K views · 8:33 · Go to channel · Error code P0139, O2 sensor replacement, Honda Accord - VOTD. Robert DIY•99K views ·...Honda is spending $700 million to retool three of its Ohio plants to build electric vehicles as it aims to phase out gas engines by 2040. Honda said on Tuesday it is spending $700 ...2005 honda civic 2.0 i vtec type r 3dr hatchback final premier edition Honda civic hybrid p1130 code p0141 2003 codes cel p1420 2005 honda sport civic si image. photo 12 of 14. p0139 help - HondaCivicForum.com. World car wallpapers: honda civic 2005 P0139 code Honda cca1 44e4 bf1e. Honda accord sensor 2006 code catalytic converter …About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...Jan 28, 2023 · Quick solution to fix Honda CRV O2 Sensor Code P0139-~-~~-~~~-~~-~-Please watch: "HOW TO APPLY for GLOBAL ENTRY| A Step-By-Step Guide in (2023)" https://www.... P0139 Honda: Code Meaning, Causes, Symptoms, & Tech Notes (With Video) The Heated Oxygen Sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. For optimum catalyst. www.engine-codes.com That link has pictures and a video. Before spending the money, for sure look at the wire harness for ...Jan 16, 2021 · 2994 posts · Joined 2006. #2 · Jan 16, 2021 (Edited) Short answer is yes, foulers are causing the code. Under certain conditions during deceleration, the ECM will test the response time of the O2 sensor. If it does not respond fast enough, because it has been moved out of the exhaust stream the code will set. If you are not completely ... On certain Ford vehicles, code P0133 indicates a contaminated HO2S sensor, exhaust leaks, shorted or open wiring, and improper fueling among other issues. Common causes of the P0133 code include a faulty oxygen sensor or air-fuel ratio sensor, a malfunctioning heater circuit on the oxygen sensor or air-fuel ratio sensor, and circuit …The automobile fault code P2271 can be caused by a faulty Heated Oxygen Bank 1 Sensor 2, an open or shorted harness of the Heated Oxygen Bank 1 Sensor 2, a poor electrical connection in the Heated Oxygen Bank 1 Sensor 2 circuit, low or high fuel system pressure, fuel contamination, faulty fuel injectors, exhaust gas leaks, and engine vacuum leaks.2005 p0139. Hi everyone! Last Thursday I was driving my 2005 I4 and I got a CEL and took it Advance Auto and I got P0139 - O2 sensor slow to respond. The light went off Sunday and just came on again today. After doing some research, it sounds like I should be replacing the secondary O2 sensor that involves the cat and passenger seat floor ...Pueden existir diferentes soluciones para poder resolver la situación del código P0139 Honda: Limpieza del sensor de oxígeno: Se puede intentar limpiar el sensor de oxígeno calentado secundario 2 para eliminar cualquier suciedad o residuo que pueda estar afectando su funcionamiento. Reemplazo del sensor de oxígeno: Si la limpieza no ...Two minutes into the next drive the following day I smell un-burned fuel. I pull over and crawl all over the car. There were no leaks. The smell is from the exhaust, and clearly the engine is running rich. Shortly I get emissions notice and CEL, which turns out to be P0139 (Sensor Circuit Slow Response - Bank 1 Sensor 2). That's the down-stream ...@Luftmasse my reasoning was perhaps a leak before the Upstream A/F ratio sensor, causing a rich condition by thinking it needs to add fuel because the computer sees lean due to additional oxygen. That was the theory anyway. In that scenario, would the rear 02 throw a P0139 because of poor running of the engine? Based on my general reading …How to Fix. Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for … Install a new oxygen sensor: insert a new oxygen sensor into the exhaust pipe and tighten it with the wrench. Reconnect the wiring harness: connect the wiring harness back to the new oxygen sensor. Clear the code: use an obd-ii scanner to clear the p0139 code.
Jun 14, 2020 · To diagnose the P0139 2008 Honda Accord code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour. . Lionel dahmer cause of death
I've mentioned what to check. We can't advise you on disabling emissions equipment, but it sounds like that worked for you regarding that specific code.HMC: Get the latest Honda Motor stock price and detailed information including HMC news, historical charts and realtime prices. Indices Commodities Currencies StocksIt's State inspection time (due today) so I replaced both B1S2 and B2S2 O2 sensors, with non-foulers installed. I got P0139 and P0159 codes, indicating slow response from the new sensors. I removed the non-foulers, and got a P0420 code, which is what I got 5 years ago. I replaced the non-foulers on B1S2, and the P0139 returned (B2S2 appears …P0139 is a common OBDII code that occurs in many vehicles, including the Honda Civic.The code is triggered when there is an issue with the response time from the oxygen (O2) sensor when switching voltage …The engine code P1157 refers to the o2 sensor before the catalytic (paid $132) and P0141 refers to the o2 sensor on the catalytic converter (paid $121). Both of the sensors on my Element went out at the same time. I replaced the sensors myself (got both from a Honda dealer) and had a mechanic reset the Malfunction Indicator Lamp.P0139 Honda: Code Meaning, Causes, Symptoms, & Tech Notes (With Video) The Heated Oxygen Sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. For optimum catalyst. www.engine-codes.com That link has pictures and a video. Before spending the money, for sure look at the wire harness for ...To diagnose the P0139 BMW code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.Jun 18, 2021 · Injectors (dealer) After the injector replace, the P0139 came back - in just 10 miles or so. Dealer said "we're not touching that" cuz your guy replaced with NON-OEM (he used Bosch). Bosch says Honda buys the EXACT same sensor and puts their name on it. Additional info: B1S2 has been replaced Twice - first time P0139 comes back under 10 miles ... Good morning, Quartz readers! Good morning, Quartz readers! France celebrates Bastille Day. This year’s military parade, which marks the 100th anniversary of America’s entry into W...Get a Quote. Your Honda is reliable and efficient, but even the most well-made cars can encounter issues. One problem that Honda owners may face is the P0135 diagnostic trouble code, which can indicate a malfunction in the vehicle's oxygen sensors, like the O2 sensor heater circuit.2005 p0139. Hi everyone! Last Thursday I was driving my 2005 I4 and I got a CEL and took it Advance Auto and I got P0139 - O2 sensor slow to respond. The light went off Sunday and just came on again today. After doing some research, it sounds like I should be replacing the secondary O2 sensor that involves the cat and passenger seat floor ...Jazz GK ไฟ Engine P0139 โชว์ซะงั้นเสียเงินจนได้#jjsina ️ ️ฝากติดตามช่องด้วยนะจุฟ ️ ️ : https ...Honda describes the P0138 this way: The secondary heated oxygen sensor (HO2S) (sensor 2) detects the oxygen content in the exhaust gas downstream of the three way catalytic converter (TWC) during stoichiometric air/fuel ratio feedback control based on the air/fuel ratio (A/F) sensor (sensor 1) output voltage. ...Here are the most common issues that cause the P0139 code in the Honda Accord. They are presented in order (somewhat) of most to least likely to cause the problem. Bad Oxygen Sensor – The O2 sensor …Here is how to change the O2 sensor (bank 1 sensor 2 downstream sensor) on a honda civic. NOT to be confused with the air/fuel ratio sensor (Bank 1 sensor 2 ....