P015d code chevy silverado. DTC P015B is "HO2S Delayed Response Lean to Rich Bank 1 Sensor 1". DTC P015D is "HO2S Delayed Response Lean to Rich Bank 2 Sensor 1". The heated oxygen sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content of the exhaust stream.

When an OBD-II equipped vehicle has a stored P015D code, it means that the powertrain control module (PCM) has detected a delayed response time from the upstream (first …

P015d code chevy silverado. Still getting P015B and now P015D codes. The light was on for a day or two and gone now, but I just checked and both codes came up. Any suggestions?

May 29, 2022 · The P0172 code means that more gasoline is detected in the exhaust gases exiting the combustion chamber. If the P0172 is set in along with the P0175 code, it is highly likely that the problem is caused by leaking fuel injectors. If there are no leaking fuel injectors, the next step is to replace the air filter and clean the Mass Air Flow (MAF ...

The “P015D code” is a specific diagnostic trouble code that refers to a fault in the oxygen sensor circuit on bank 2, sensor 1 in a Chevy Silverado. This code indicates a …May 29, 2022 · To diagnose the P015D 2015 Chevrolet Silverado 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.

Dec 5, 2023 · When the P0449 code is present in a Chevrolet Silverado, several common symptoms may be experienced: Check engine light illumination: This is often the first indication that there is a problem with the EVAP system. Difficult starting: The vehicle may be harder to start or may require multiple attempts before starting properly.Those P0172 P0175 Chevy Silverado codes say your engine runs too rich on both banks (engine’s banks 1 and 2). While P0175 will pop up when the bank 2 oxygen sensor detects the oxy deficiency or too much fuel amount in the engine, P0172 functions similarly under the bank 1 oxygen sensor’s control.Nov 2, 2023 · The code P015D: O2 Sensor Slow Response - Rich to Lean ... Vehicle Information 2013 Chevrolet Suburban 1500 LT 5.3L. Issue + Repair History. MIL (Malfunction Indicator Lamp) on; Replaced O2 sensors to solve P013a code; P015d code persisted (Bank 2 sensor 1 delayed response) Other OBD2 Codes + Test Results.Nov 29, 2023 · Chevy silverado p015d: meaning, causes, symptoms, & diagnosis2015 chevy silverado P0446 code 2014 chevy silverado2002 chev silverado 4.8l 4wd p0453 i’m busy working through the. What Is P0521 On The Chevy Silverado And How Do I …Replacing speakers in a vehicle is one of the simplest and most cost-effective ways of improving the sound in your car. The Chevrolet Colorado is a good candidate for speaker repla...Chevy silverado p015d: meaning, causes, & diagnosisChevrolet gallery: p015d chevrolet silverado P0157 2014 chevrolet silverado: code meaning, causes, symptoms, & techSilverado chevy code p0121 p0442 p0171 p0304 misfire trouble common relatively obdii somewhat.Dec 26, 2021 · how to remove, install, change or replace an oxygen O2 sensor. This video is applicable to the Chevy Silverado and GMC Sierra, model years 07, 08, 09, 10, 11...May 28, 2022 · The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the accumulated mass airflow monitored during rich-to-lean transitions between 450 - 150 mV is greater than calibrated value. P013A Chevrolet Code - HO2S Slow Response Rich to Lean Bank 1 Sensor 2June 18, 2022 by Jason. P015D is a generic trouble code, which means that it has the same definition for the GMC Sierra as it would any other vehicle. The code indicates that the Oxygen (O2) sensor on bank 2 is not cycling from lean to rich as fast as it should be. P015D is usually caused by a bad oxygen sensor, but there can also be other ...

Mar 24, 2019 · Anyone have a fix for this? 2013 silverado throwing code p015d. Changed out both sensors on bank 2 and the code comes and goes as it pleases. Really frustrating.2013 Chevy Silverado Engine code p015b p015d. Answered in 1 minute by: Chevy Mechanic: GM Tech (Cam) GM Tech (Cam), Chevy Technician. Category: Chevy. Satisfied Customers: 32,822. Experience: GM Grand Master Technician 2007. 14 years experience. Verified.Jun 17, 2022 · June 17, 2022 by Jason. P015B is a generic trouble code, which means it has the same meaning any vehicle. In the case of the Chevy Silverado, It indicates that the Oxygen (O2) sensor on bank 1 is not cycling from lean to rich as fast as it should be. P015B is usually caused by a bad oxygen sensor, but there can also be other causes.Mar 24, 2022 · Replacing 2 oxygen sensors on the 2007 to 2013 model Chevrolet Silverado and GMC Sierra truck. Today I’ll be showing you how to replace:Bank 1 sensor 1 (driv...

Oct 22, 2020 · This is a small town dealer so if it happens again, I'll try another dealer. I still have two permanent codes. P015B and P015D. I have read they go away if all is good with those two O2 sensors and drive it for a while. All four were changed last year. 2013 Silverado LT CC 1500 Z71 5.3 4WD 3:42's all stock

June 17, 2022 by Jason. P015B is a generic trouble code, which means it has the same meaning any vehicle. In the case of the Chevy Silverado, It indicates that the Oxygen (O2) sensor on bank 1 is not cycling from lean to rich as fast as it should be. P015B is usually caused by a bad oxygen sensor, but there can also be other causes.

P015D O2 Sensor Delayed Response - Lean to Rich (Bank 2 Sensor 1) Code Severity & Symptoms. Since a P015C code means that an O2 sensor has remained slow or unresponsive for an extended period of time, it should be categorized as severe. Symptoms of this code may include: Lowered fuel efficiency; A general lack engine performanceThe Diagnostic Trouble Code (DTC) will be set when the ECM detects that the HO2S 1 rich-to-lean or lean-to-rich average response time is greater than a calibrated value for greater than 60s. P015D 2016 Chevrolet Silverado Code - Oxygen Sensor Delayed Response Lean to Rich Bank 2 Sensor 1HVAC Mechanic. 45.4K subscribers. Subscribed. 167. 20K views 10 months ago. How to fix a Chevy or GM P015B engine code: O2 Sensor Delayed Response – …Jun 20, 2021 · 4 codes after replacing all 4 o2 sensors - p219a & p219b. Hey all - started getting o2 sensor codes like 3 years ago, and decided not to bother with them. Check Engine would come and go - usually on 50% of the time or so. Finally got tired of not being able to remote start, mostly to keep my new puppy cool when I need to leave him in the …

Nov 2, 2023 · The code P015D: O2 Sensor Slow Response - Rich to Lean ... Vehicle Information 2013 Chevrolet Suburban 1500 LT 5.3L. Issue + Repair History. MIL (Malfunction Indicator Lamp) on; Replaced O2 sensors to solve P013a code; P015d code persisted (Bank 2 sensor 1 delayed response) Other OBD2 Codes + Test Results.Chevrolet gallery: p015d chevrolet silverado Chevy s10 engine code p0453.. Chevrolet Gallery: P015d Chevrolet Silverado. Check Details. Chevrolet Gallery: P015d Chevrolet Silverado. Check Details. Chevrolet Gallery: P015d Chevrolet Silverado. Check Details. P050D DIY FIX! GMC CHEVY Rough Idle Misfire Check …The P0120 code on your Chevy Silverado indicates an issue with the throttle position sensor (TPS). This sensor plays a crucial role in your truck's performance, as it monitors the throttle valve opening percentage and provides input to the engine control module (ECM) to help regulate fuel and air intake. When the P0120 code is.P015D Chevrolet Code - Oxygen Sensor Delayed Response Lean to Rich Bank 2 Sensor 1. How to Fix. Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors.Feb 23, 2021 · P0452 is a generic OBD II code that can occur in the Chevy Silverado. It means that your Silverado’s EVAP system has detected low fuel tank pressure. The evaporative emissions control system (EVAP) sends fuel vapors from the fuel tank to the intake manifold to be burned off. When the pressure in the system is too low, P0452 is …The P015B code indicates a specific issue with the O2 sensor in Bank 1, Sensor 1, of the vehicle’s exhaust system. This sensor is responsible for measuring the oxygen content in the exhaust gases and providing feedback to the engine control module (ECM) to ensure optimal air-fuel mixture for combustion. The code is commonly triggered in ...Ron: I have a 2013 chevy silverado 1500 with a 5.3l engine. engine light is on .codes are P015B / P015D / P219A. What - Answered by a verified Ford Mechanic. ... I got a 2008 chevy silverado with a 5.3l flex motor. engine light is on and the codes are P0171 & P0174.the idle surges. i can erase the codes, ...The P015D code means “O2 sensor delayed response – lean to rich.” The code triggers when the vehicle’s oxygen sensor isn’t sending back information that the power control module (PCM) expects.Chevy silverado p015d: meaning, causes, symptoms, & diagnosisP0446 code: evaporative emission control system causes & fixes I have the code p0308 on 04 chevy silverado 6.6 duramax lly. my balance rates seem fine when the2013 chevy silverado engine code p015d.Replacing 2 oxygen sensors on the 2007 to 2013 model Chevrolet Silverado and GMC Sierra truck. Today I’ll be showing you how to replace:Bank 1 sensor 1 (driv...May 29, 2022 · The P0172 code means that more gasoline is detected in the exhaust gases exiting the combustion chamber. If the P0172 is set in along with the P0175 code, it is highly likely that the problem is caused by leaking fuel injectors. If there are no leaking fuel injectors, the next step is to replace the air filter and clean the Mass Air Flow (MAF ...Check Details Trailblazer chevy p0135 p0449 p0014 evap canister obdii occurs failure. Gm trucks sweep ford's f-series, propel automaker to top of j.d. power2013 chevy silverado engine code p015d Chevy 5.3 egr valve location: q&a for p015d code & intake egr valveSilverado chevrolet 1500.2004 chevrolet silverado 1500 p1726a Code gif chevy 41a4 Crew silverado chevrolet 1500 P0449 chevy silverado. ... Chevrolet Gallery: P015d Chevrolet Silverado. My 2001 chev 2500hd has p1875. code. won't shift out of 3rd and service 2014 chevrolet silverado 1500 07 silverado 1500 5.3 4wd need assistance troubleshooting a will crank.Code P015d 2013 Chevy Silverado. Silverado p0741 quite trouble Silverado p0741 p0121 p0700 obdii somewhat. 11 Jul 2023. Trailblazer chevy p0135 p0449 p0014 evap canister obdii occurs failure Chevy silverado p0121 code diagnosis Silverado p0446 p0135 p0305 evaporative emission p0455 obdii vent leak detected occurs caused evap.Sep 20, 2020 · P015B Help. I have a 2013 Suburban 1500 LTZ 4x4 with the aluminum block LC9 5.3. The other day I had the CEL illuminate for a code called P015B, which means that the powertrain control module detected a delayed response time from the upstream oxygen sensor or circuit for engine bank one. I read online that the most common cause is a bad sensor.Sep 21, 2022 · p015d & p015b... common issue with chevy tahoe. this truck has the 5.3 motor. how to change 02 sensor... upstream. p015d & p015b... common issue with chevy tahoe. this truck has the 5.3 motor. how ...Tech Notes. DTC P06DD (Engine Oil Pressure Control Solenoid Valve Performance) may be set during the first engine start-up immediately following an engine oil and filter change on some 2019-2022 Silverado and Sierra models and 2020-2022 CT4 models equipped with the 2.7L engine (RPO L3B) and some 2020-2022 Encore GX and 2021-2022 Trailblazer models equipped with the 1.3L engine (RPO L3T).

Web p015d code for 2013 chevy silverado i changed the o2 sensor, and the check engine light went away for a week, but came back on today. Web Repair Information For P015D Code. Makes a strange rattling noise. This truck has the 5.3 motor.Chevy silverado p0135 obdii code diagnosisChevrolet gallery: p015d chevrolet silverado Salvage silverado 2500 chevrolet rebuildable repairable 4x4 lt title cars 2040Silverado p0741 quite trouble. Silverado trailboss challengesHsv / chevrolet silverado 2500 Gm confirms electric chevy silverado pickup, claims 400-mile rangeP0446 code 2014 …Chevy silverado p0741 obdii code diagnosis Silverado p0741 quite trouble P0446 code 2014 chevy silverado Silverado gmc z71 autotrader wt. ... P015d Chevrolet Silverado. Chevrolet gallery: p015d chevrolet silverado Salvage silverado 2500 chevrolet rebuildable repairable 4x4 lt title cars 2040 P0446 ecm suggests corolla replacing.Aug 15, 2023 · Chevy silverado p0121 code diagnosisEvap p0449 silverado solenoid canister freeautomechanic 2013 chevy silverado review ~ chevy silverado2011 chevrolet silverado 1500. Purchase used 2013 chevrolet silverado lt 2500 4x4 6.0 rebuildableCode p0449 evap canister solenoid 2013 chevy silverado with rims hd pictures2013 chevy …P0158 is an OBDII code that occurs in many vehicles, including the Chevy Silverado. The code is triggered when: The voltage at the O2 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 …Nov 29, 2022 · Fasten the two locating screws 7 and reconnect the wiring connector, pushing it tight until it makes an audible "click" sound 8 . Once the new MAF sensor is fitted, the Silverado's ECU will ...Dec 16, 2020 · 2013 Silverado 5.3 - P015B. Last few months CEL light has been on and off, finally took the truck in and they changed the O2 sensor. Waited a few days and had the Truck smog tested and passed. Truck ran fine almost two weeks, light just came back on scanned P015B and cleared code.Mar 23, 2019 · March 23, 2019 by Jason. P0156 is an OBDII trouble code that occurs in the Chevy Silverado. It is typically caused when the O2 Sensor voltage is not within its specified operating range. Bank two will be the side of the engine with cylinder 2 in the firing order. Sensor 2 is aft of the catalytic converter.

I have a 97 chevy 2500 van and it pulls a P0132a and a p0143b and a p0138 code, its a 5.0l gas engine not all at the same time. It has a single exhaust that bank 1 and bank 2 go into with only 1 o2 be …Exhaust gas leaks. Engine vacuum leaks. What does this mean? Code Tech Notes. Replacing the Front Heated Oxygen Sensors (HO2S) usually takes care of the problem. …Car shoppers, take note: The Chevy Volt has received a $4,400 price cut amid low sales and a new model. By clicking "TRY IT", I agree to receive newsletters and promotions from Mon...P0134 Code Chevy Silverado - How to Fix the Code - Dump Truck P1416 silverado ... P0134 code chevy silveradoChevrolet gallery: p015d chevrolet silverado Chevrolet suburban questionsThe famous p0463. I have a 2008 Chevy Silverado extended cab with 5.3 liter engine. My.May 29, 2022 · The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the HO2S 1 rich-to-lean or lean-to-rich average response time is greater than a calibrated value for greater than 60s. P015D 2016 Chevrolet Silverado Code - Oxygen Sensor Delayed Response Lean to Rich Bank 2 Sensor 1P0158 is an OBDII code that occurs in many vehicles, including the Chevy Silverado. The code is triggered when: The voltage at the O2 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 P0158.Ron: I have a 2013 chevy silverado 1500 with a 5.3l engine. engine light is on .codes are P015B / P015D / P219A. What - Answered by a verified Ford Mechanic. ... I got a 2008 chevy silverado with a 5.3l flex motor. engine light is on and the codes are P0171 & P0174.the idle surges. i can erase the codes, ...DTC P015B is "HO2S Delayed Response Lean to Rich Bank 1 Sensor 1". DTC P015D is "HO2S Delayed Response Lean to Rich Bank 2 Sensor 1". The heated oxygen sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content of the exhaust stream.The P015B code indicates a specific issue with the O2 sensor in Bank 1, Sensor 1, of the vehicle’s exhaust system. This sensor is responsible for measuring the oxygen content in the exhaust gases and providing feedback to the engine control module (ECM) to ensure optimal air-fuel mixture for combustion. The code is commonly triggered in ...Anyone have a fix for this? 2013 silverado throwing code p015d. Changed out both sensors on bank 2 and the code comes and goes as it pleases. ... Chevy Silverado and ...The first and foremost thing that you need to do to fix the 7e8 engine code is to find the DLC, i.e., the Data Link Connector. The location of DLC will vary based on the model of Chevy that you are using. Connect the code scanner tool to the DLC port: Secondly, connect the code scanner tool with the DLC port of your Chevy.P015d code chevy silverado Chevrolet ssr. 19 Nov 2023. P015d 2013 chevy silverado Silverado chevrolet 1500 cab crew 2008 chevy trucks 2007 suvs used ssr truck 2010 review gm car recalls steering column Chevrolet analiza vender la silverado en la argentina. P015d Chevrolet Silverado FrontReplied by John Clark on topic 2013 Tahoe 5.3 P015D P015B pre-cat O2 sensor delayed response. I got burned on this with a Mercedes a couple years ago. Turned out the slow response codes were caused by a cracked catalytic converter. No exhaust noise but was leaking enough air in to set slow response code.The P015D code means “O2 sensor delayed response – lean to rich.” The code triggers when the vehicle’s oxygen sensor isn’t sending back information that the power control module (PCM) expects.P0172 is thrown when the oxygen sensors detect that the air-fuel mixture is too rich. A rich fuel mixture contains too much fuel in relation to air. The A/F ratio for ideal combustion is 14.7 parts air to 1 part fuel (14.7:1). With that in mind, either too much fuel or not enough air can cause a vehicle to run rich.Check Details Trailblazer chevy p0135 p0449 p0014 evap canister obdii occurs failure. Gm trucks sweep ford's f-series, propel automaker to top of j.d. power2013 chevy silverado engine code p015d Chevy 5.3 egr valve location: q&a for p015d code & intake egr valveSilverado chevrolet 1500.Oxygen Sensor. The P0171 code is thrown when the bank one sensor one O2 sensor reports that your Silverado’s engine is running lean. The sensor on or right after the exhaust manifold is typically the sensor that reports the lean condition. If it is malfunctioning, it can cause a false P0171 code. Swap Test.Mar 24, 2019 · Anyone have a fix for this? 2013 silverado throwing code p015d. Changed out both sensors on bank 2 and the code comes and goes as it pleases. Really frustrating. Save Share. Like. J. JKTahoe ... Chevy Silverado and GMC Sierra Forum. 1.4M posts 183.3K members Since 2009 ...

P015D O2 Sensor Delayed Response - Lean to Rich (Bank 2 Sensor 1) Code Severity & Symptoms. Since a P015B code means that an O2 sensor has remained slow or unresponsive for an extended period of time, it should be categorized as severe. Symptoms of this code may include: Lowered fuel efficiency; A general lack engine performance

Feb 23, 2021 · P0452 is a generic OBD II code that can occur in the Chevy Silverado. It means that your Silverado’s EVAP system has detected low fuel tank pressure. The evaporative emissions control system (EVAP) sends fuel vapors from the fuel tank to the intake manifold to be burned off. When the pressure in the system is too low, P0452 is …

To diagnose the P015D 2014 Chevrolet Silverado 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.May 28, 2022 · The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the accumulated mass airflow monitored during rich-to-lean transitions between 450 - 150 mV is greater than calibrated value. P013A Chevrolet Code - HO2S Slow Response Rich to Lean Bank 1 Sensor 22013 Silverado 5.3 - P015B. Last few months CEL light has been on and off, finally took the truck in and they changed the O2 sensor. Waited a few days and had the Truck smog tested and passed. Truck ran fine almost two weeks, light just came back on scanned P015B and cleared code.Mar 7, 2020 ... FIX CODE P0030 P015B P0130 P0132 P0134 ENGINE LIGHT ON CHEVY, CHEVROLET, GMC, BUICK, CADILLAC ▻ Car Scanner: https://amzn.to/2G5lxTi ...2013 Chevy Silverado 1500 Code P015d. 21 Aug 2023 by Kirk Pagac Sr. Silverado chevrolet 1500 cab regular truck reviews menu previous next specs Code défaut p015d: réponse retardée du capteur d'o2 2013 chevrolet silverado 1500 regular cab. 2002 Chev Silverado 4.8L 4WD P0453 I’m busy working through the.Sep 6, 2023 · Chevrolet gallery: p015d chevrolet silverado. P0446 code 2014 chevy silveradoChevrolet gallery: p015d chevrolet silverado Purchase used 2013 chevrolet silverado lt 2500 4x4 6.0 rebuildableSilverado trims 2dr 4x2 tacoma drain autotrader americanlisted p0172 laramie unlock.I have a 2014 Tahoe 5.3L V8 With P015B P015D I have replaced Mass Air Flow sensor and performed throttle body service. ... I have a 2003 Chevy Trailblazer EXT w/5.3L V8. Codes p0101, p0153, p0300, ... 2000 chev silverado 5.3L /Engine will not idle or idles roughly and stalls.Feb 16, 2021 · Chevy Mechanic: Tim's Auto Repair. ok. you need to check the fuel pressure,,the fuel pump may be weak. DTCP015B Symptom DescriptorDTC description not found Probable CausesFuel Pressure IncorrectHeated Oxygen Sensor (HO2S) Bank 1 Sensor 1Vacuum LeakFuel QualityEngine Oil ConsumptionExhaust SystemHeated Oxygen Sensor (HO2S) Harness Poor ...

wholesale harry hinesmilana vayntrub naked picselden ring bloodhound fang buildqfconline P015d code chevy silverado trailblazer electric fan conversion [email protected] & Mobile Support 1-888-750-3019 Domestic Sales 1-800-221-8897 International Sales 1-800-241-5029 Packages 1-800-800-8289 Representatives 1-800-323-4427 Assistance 1-404-209-2806. My 2014 5.3L 4WD Tahoe has developed a nasty habit of throwing P015B and P015D codes, O2 sensor Delayed Response – Lean to Rich, for sensor 1 on both banks. ... Chevy Silverado Forum (GMC Sierra) Member Introductions General Chevy & GM Tech Questions Chevy Suburban Forum (GMC Yukon XL) GM Powertrain. Top …. creepy fortune teller costume June 17, 2022 by Jason. P015B is a generic trouble code, which means it has the same meaning any vehicle. In the case of the Chevy Tahoe, It indicates that the Oxygen (O2) sensor on bank 1 is not cycling from lean to rich as fast as it should be. P015B is usually caused by a bad oxygen sensor, but there can also be other causes.Tech Notes. DTC P06DD (Engine Oil Pressure Control Solenoid Valve Performance) may be set during the first engine start-up immediately following an engine oil and filter change on some 2019-2022 Silverado and Sierra models and 2020-2022 CT4 models equipped with the 2.7L engine (RPO L3B) and some 2020-2022 Encore GX and 2021-2022 Trailblazer models equipped with the 1.3L engine (RPO L3T). missoulamugs.comkroger weekly ad troy mo 5 days ago · Chevy Silverado uses several DTC (Diagnostic Trouble Codes) to notify users about the engine’s irregularities. The P0135 is one of the trouble codes & it’s generated via the PCM. If you’re getting this DTC & don’t know what it … morgan wallen concert length 2023aldine isd teacher salary schedule New Customers Can Take an Extra 30% off. There are a wide variety of options. Mar 24, 2024 · ← 2013 Chevy Silverado 1500 Code P015d P015b Code 2013 Silverado ... 2014 Chevy Cruze 1.4 Turbo Code P0300. posts 13 Oct 2023. Quiet Tires For Honda Pilot. posts 27 Mar 2024. P1351 Chevy Silverado. posts 28 May 2023. P0498 Honda Odyssey. posts 04 Jun 2023. P000b Dodge Ram 1500. posts 29 Mar 2024. P228c …Nick B. January 26, 2021. Diagnostic trouble code (DTC) P015D on the Chevrolet Silverado (and many other vehicles) indicates that the PCM has found a delayed response time from the upstream oxygen sensor. It's exceedingly likely, in this case, that your O2 sensor has failed, but it may also be the result of bad wiring, a failed or plugged ...Those P0172 P0175 Chevy Silverado codes say your engine runs too rich on both banks (engine’s banks 1 and 2). While P0175 will pop up when the bank 2 oxygen sensor detects the oxy deficiency or too much fuel amount in the engine, P0172 functions similarly under the bank 1 oxygen sensor’s control.