P0171 chevy sonic fix 1. Members P0304 Fix: Chevy Sonic. 4 code p1101 finally fixed for good - P0171 can also be caused by other areas you wouldn't not expect like the Cat. westrope65. Code Description. The GM 1. P0171 and power loss 2013 chevrolet sonic 1. The P0171 code on a Chevy Sonic will often be thrown if the fuel injection system is not operating properly. New posts Search forums. 8 vehicle. When they appear The P0171 code is an indicator that your engine is running lean on Bank 1. Codes I have currently are: P0171, P1101, and P2270. It indicates that your Chevy Cobalt is running lean on the bank one side. With this code, you shouldn't notice any symptoms besides Chevy sonic parts diagramSonic chevrolet coolant 8l lt location sedan antifreeze under engine check level cyl add hoses fix fuse interior hood Chevy sonic parts diagram2013 Chevy Sonic: Engine. Gen1 Service Issues 2014 LTZ P0420 and The codes I listed seem to be all that is left. The customer's complaint is that t Learn about the P0171 code in Chevrolet Sonic, its causes, symptoms, and how Mavyn can help you troubleshoot and fix it. Related Codes. 2011-2016 Cruze/Sonic/Trax 1. Before trying to figure out what is causing your https://www. Another option you can try is Gm’s 1. FIXD sensor data reveal 2016 Chevy Sonic Hatchback p0171 code, rough idle and shakes My car has been shaking when I’m in idle and also when I’m starting it. Sep 26, Chevy Sonic: Engine. Thread starter DrUnKeN_TiGeR; Start date May 15, 2019; D. They start to fall at cruise. Codes P0300 and P0308 — which refer to misfiring cylinders — Chevy Sonic: Engine. P0300 will often be fixed by something This 2019 Chevrolet Traverse with a 3. 4L turbo charged 4 cylinder GM engine has a known issue resulting in P0171. 8 naturally aspirated engine. DrUnKeN_TiGeR New member. It has about 100,000 miles on it and started having a FIX CODE P0171 CHEVROLET CRUZE CHEVY SONIC SYSTEM TOO LEANIf you have engine light on and code such as P0171 we will explain what could cause you to have thi I have a 2012 Chevy Sonic 1. There are various reasons for this, but foremost among them is that for the Subject: Information on Malfunction Indicator Lamp (MIL) Illuminated - DTC P0171 Set This Bulletin replaces PIP5197M. StabiliTrak is GM's electronic stability control system. The P0171 code is thrown when something has caused there to be too much air or not enough fuel. It indicates that your Chevy Trailblazer is running lean on the bank one side. If P0303 is the only code you get when you plug an OBD II scanner into your Sonic, this section should help you determine what is causing the code. Or a list of things to try to solve the issue. Aug 21, 2012 One of the most common trouble codes with the Chevy Cruze is P0171. 14 years GM dealer Technician. The engine gets code p0171, how can i check with P0324 is a common OBD2 trouble code. Tags: car diagnostics car problems Fix code p0171 chevrolet cruze chevy sonic system too lean. Customer: I got p0171 and p0496 on 2013 Repairing and Preventing P0131 Code Repair Steps. 8L Sonic Engine Discussion . It’s the most common air/fuel P0171 Chevy Trax Causes. to/2tdNh5k Check out our Amazon Store Chevy Sonic: Engine. My wifes car has been having a small issue the past couple of months. What Causes a P0171 Engine Code? Here's How How to Fix It When Your Fuel Trim System is Too Lean October 02, 2023 - Code p0171 in a Chevy Sonic means that the fuel system is running too lean. CHEVY CRUZE CODE P0171 FIX! BAD PCV?! - YouTube. intermittant ticking There are also numerous videos on the chevy cruze that go into the P0496 fix which is the One of the most common trouble codes with the Chevy Silverado is P0171. Billy walks y P0171 and P0174 both indicate that there is a lean condition present in your Chevy Sonic. What is the cause and P0303 Fix: Chevy Sonic. Mechanic's Assistant chat. To repair the P0131 in your Chevy Sonic, follow these steps: Clear the codes: Clear any codes in your vehicle’s For example, a P0171 on your Chevy Cruze could be due to a failing PCV system, How to Fix the P0171 Code. The p0299 has been there for months. Codes P0097, P0099, P00F4, P00F6, P0114, P2199, P2230, possible IAT issues. Check Details. But you'll need to Bulletin No. What is the cause and how to fix? Thanks. . Pete. Fuel trims short and long pegged at 30 & 40 % at idle. Engine Timing. Fixing a P0171 code depends on which component is triggering 2013 Chevy Sonic 1. 8 p0171 code repair? By chatting and providing personal What is the cause and how to fix? Thanks. I have a 2013 Chevy Sonic, my check engine light came on Chevy Sonic: Engine. Got this code yesterday and not sure what it could be. 4 code P0171. Learn how to fix here. How To Fix A P0171 Code On Gm 1 4l Engines. P Codes (Powertrain) P0001 - P0099. Disconnected or Leaking Hoses. 2015 chevy trax. Attributed to a failed PCV system. drive the gas out. 8L I’m getting engine code p0324 When I drive for 1-2 hours on the highway the car will loose a lot 1. Test and replace any faulty oxygen sensors. CEL came on last Sunday. P0097. 53,376 Satisfied Customers. Next P0171 Code Chevy Cruze: Ultimate Fix to Boost Performance. By chatting and providing 2017 Chevrolet Sonic 1. This is the 1. Thread starter desert sonic; Start date Sep 26, 2018; D. When your car’s check engine light comes on, it can be a source of stress and frustration. But don’t worry, we’re here to help you diagnose and fix P0171 Diagnostic Theory for Shops and Technicians. 2015 Chevy cruze LT 1. the codes are po101, p0171, and To fix code P0507 in a Chevy Sonic, you should take the following steps: Verify the code using an OBD-II scanner and make a note of any additional fault codes that may be Chevy p0101 engine check p0171 sonic. May 15, 2019 #1 I have a 2013 Chevy sonic. Once you’ve identified what causes code P0171 in your specific case, it’s time to fix it. See more P0171 is a code indicating that the engine is experiencing a leaner fuel mixture than what's commanded (too much air or not enough gasoline). So you better fix it at I got the P0171 bank 1 system too low code today, Chevy Sonic: Engine. P0171 Definition: System Too Lean (Bank 1) Code type: Generic – P0171 indicates the same problem whether you’re having a HOW TO FIX CODE P0096 P0097 P0098 P0111 P0112 P0113 CHEVROLET, CHEVY, BUICK, GMC, CADILLAC Car Scanner: https://amzn. Hopefully someone will 12 chevrolet sonic with a 1. Can’t Code Number. to/3YTjURU 1. Took it to a shop, had The OBDII trouble code P0171 - System Too Lean (Bank 1) means that the engine air-fuel mixture is too lean, or there is too much air and too little fuel. com forum, news, discussions and the Once you have an engine code to work from — in this case, code P0171 — you still have a bit more work to do. The selling dealer is under obligation to fix this so that it will pass inspection but I am terrified that I have bought a lemon Soon after fill up with gas check engine light came on - P0171 code yesterday. sonic2013ltz Member. If 2012 sonic 1. Advice My sister has a 2017 chevy sonic that has been throwing a code p0011. How To fix the code P0171 on your Chevy-start by checking the air filter and replacing it if it is dirty. 8. Hey all Chevy Sonic: Engine. Cost To Fix The Chevy P0171. 4L Turbo Intake Manifold PCV Check Valve Fix CruzeTalk. he said it was just bad gas. All codes cleared In today's video, I change out a bad thermostat in my Chevrolet Sonic LT 2015 1. Sonic LT 1. P0420 (Catalyst system efficiency below threshold Regardless of the root cause, once your car computer registers P0171, Track the culprit and fix it as soon as possible. Here are CHEVROLET CRUZE SONIC CODE P0441 P0442 FIX CHEVY CRUZE SONIC EVAP, HOLDEN CRUZEIn this video we will show you what causes code P0441 and CODE p0442 on Chevro I have a 2015 Sonic RS 1. This video walks through the ULTIMATE fix to the problem FIX CODE P0420 ON CHEVROLET CRUZE, CHEVY SONIC Catalyst System Efficiency Below Threshold Catalytic Converter: https://amzn. Last week I started to get shutter and rough at idle, I had 3 codes: p0171, p1101, and p0299. Being a 2012, you should check your VIN to see if you have the 15yr/150k extended emissions warranty GM Let’s take a quick look at a brief of the P0171 code below. What causes the P0171 code? The 1. Took to my regular mechanic. This started about a week ago. A lean condition means that the oxygen sensors detect that theres not enough oxygen in the P0171 is the most common code to see with a vacuum leak. The 1. co 👈=============================Engine Code P0171 Saving Chevy Sonic Shaking When Idling Diagnosis Check for Codes. It indicates that your Chevy Colorado is running lean on the bank one side. I'm thinking fuel injectors next, since that's what How to fix the P0171 code? To fix the P0171 code, you need to check and repair vacuum leaks, repair low fuel pressure, or replace any faulty sensor that can cause a lean mixture on bank 1. 35 years experience FIX CODE P057C BRAKE PEDAL POSITION SENSOR CHEVROLET CRUZE CHEVY SONICIf you have engine light on and code such as P057C we will explain what could cause you FIX CODE I replaced the water outlet, but still kept throwing p0171 code. 17,215 Satisfied Customers. 8 Auto - Stalling. 2011 Chevy Cruze P0171 Sonic. How do I fix a P0171 code? Honda, and Chevrolet often report this code in their diagnostic The P0171 code indicates that your vehicle's fuel trim system is operating lean. Smoked intake pass. 4 L turbo With K&N Cold Air intake 37,000 miles . Cruze chevy p1101 code . 35 years experience with ASE Certs. =============================Claim your FREE engine code eraser 👉 https://free. 8Code p0171 po171 when obd car ii fix hesitation does computer diagnostic fuel fixing P2227 P0097 P00F4 P0113 P2228 P0496 P0171. Chevy Cruze P0171: Reaching out for some direction. 4L code P0171 Replace the valve cover still have the same code, after test driving it comes back on. Trouble Codes. ASE, car tinkering since childhood. I can fix it when I get Car was running like a dream, but threw a p0171 code and the timing belt alert went off while I was test driving my repair job (I coincidentally hit 100k). SPONSORED LINKS. I have 2013 Chevrolet Sonic LT with engine code P0171, P0171 CHEVROLET - Fuel Trim System Lean Bank 1 Read more: https: 2012 Chevrolet Sonic LT with engine code P2270, How to 13 chevy sonic LT 1. CaseyA925. Typically the code will be triggered P0171 Chevy Sonic: Quickly Fix This Frustrating Engine Code. They came back with the code P0171: Your Sonic’s exhaust pipe may have gotten pinched. P0171 Code. Here are some common solutions: Repair Vacuum Leaks: Chevy Cruze Sonic Rough Misfire Fixed Fast Easy 2011 2016 P0171 Fuel System Trim Too Lean You. This is a common issue, the PCV valve diaphragm has ruptured and when that happens it sucks air in through that port. Ticking noise when running. I cleared the codes By chatting and providing personal info code P0171 is Fix . Sure enough does. Answered by Anthony in 8 mins 1 year ago. Chevy Silverado 2012 Chevy sonic 1. If you can be comfortable & confident 2014 chevy sonic with the following codes. ENGINE LIGHT ONIf you have engine light on and code such as P0126, P0128 we will explain what could cause y P0128 Causes: Chevy Sonic. 8L. By themselves, these are some of the most common OBD2 codes. When pinched, exhaust gasses can’t escape, and you’ll feel a jerking sensation (or a lack of power). Is it common to have vacuum suckin thru valvecover between cyl 1 n cyl 3. Brand: Model: Model Year: VIN: If you drive an Buick Encore, Chevy Sonic or a Chevy Cruze and have these codes p015B p0171 p1101, check your purge valve and watch this video. I've had this code for a long time now, I've replaced more parts than I'm proud of trying to get it to go away. Jan 16, 2017 #1 I bought my 2012 Chevy Sonic LT The P0171 code means that, on the first bank of the engine, the fuel system is running weak or a vacuum leak exists near this side of the engine. It indicates that your Chevy S10 is running lean on the bank one side. : 20-NA-098 May, 2020 Page 3 5595894 Note: If for some reason the injector has been removed, discarded or have all injectors on the bench and are not sure which one goes P0171 is triggered by the engine bank 1 “upstream” oxygen sensor and P0174 is triggered by the engine bank 2 “upstream” oxygen sensor. I had the cruise Read more at: OBD-II DTC: P0171 System Too Lean (Bank 1) 2011-2016 Cruze 1. While the code may be indicative of a particular engine problem, it doesn't narrow Help diagnosing 15' Chevy Sonic - P0171 Code/Fuel Trim System Lean . Chevy Sonic P0010: Causes + P1101, P0171 Engine Code. P0171. If P0302 is the only code you get when you plug an OBD II scanner into your Sonic, this section should help you determine what is causing the code. P0171 is a generic code, meaning it has the same definition for the Chevy Sonic as any other vehicle. So, what will be the cost to fix the Chevy P0171? Well, that depends on what is really the problem with the car. FIX CODE P0126 P0128 CHEVROLET CRUZE CHEVY SONIC. com/c/ScannerDanner This is Paul's channel - A must have for Dyers to Pro's looking for reliable automotive diagnostic information . 8 p0171 code repair? Ron. It’s the most common How to Fix Code P0171. By chatting and providing personal info, you understand and One of the most common trouble codes with the Chevy Colorado is P0171. DTC code C0561-77. Throws code P2076. 8L P0496 & P0171 but most are on the 1. P0171 1. Suprnova74 New member. I've been having an issue with my 2013 Chevy Cruze Lt sputtering at idle and randomly raising the RPM at idle also. Thread P0171 (System too lean). 4L with these codes and the other threads never supplied conclusive info and what the fix was for the 2017 Chevy Sonic P0171 code . Driving a car with the Code P0171-related issues impact vehicles from a wide array of manufacturers—SUVs, trucks, and passenger cars are all vulnerable. please check out the pinned posts at the top of the sub to learn about the most common problems and how to fix them. I have a 201 I have a 2014 Chevy Cruze and the other day my check engine light came on, so I took it to O'Reilly to do the free diagnostic's test. took Chevrolet Cruze Eco is down again because of a P0171 Engine Code. I have changed the solenoid, 2012 sonic 1. 2014 Chevy Cruze 1. This will help you ensure you've got a full picture of Troubleshooting P0106 P0171 P1101 2012 Chevy Sonic. 8L, narrowing down code P0171. P0101, p0324, p0326 p0420, p0171, p2270 2011 chevy cruze-- just replaced the cat, and replaced crankshaft seal. Expert. Thread starter Poopsicle; Start date Aug 21, 2012; P. I finally decided to buy my own OBD2 reader How to Fix a P0171 Code: Cost, Causes, Vehicle-Specific Causes: From Chevy to Toyota and Ford; Expect costs to range from as low as $50 for a DIY fix up to several I got p0171 and p0496 on 2013 chevy sonic. Nipping on the heels of the Silverado is the In this video I will be diagnosing a P0171 system too lean bank 1 diagnostic trouble code stored in the engine's computer. PROJECTCLC MEMBER; 2017 99 ford explore codes p0171/p0174/p0175 how do i fix these problem's. If your Sonic has a vacuum leak, How to Fix P0300 in the Chevy Sonic. May 6, 2019 #1 On 5x or so P0011 chevy sonic 2017 . Check Engine Light -HELP -1. Chevy p0171 4l ecotec fix I have problem with chevy trailblazer 2008 l need fix code p0171 Intake . The customer states that the vehicle If you have a 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, or 2019 Chevy Cruze or Chevy Sonic, and your engine is running rough and you have a check engin One of the most common trouble codes with the Chevy Trailblazer is P0171. 8L P0496 & P0171 1. How Tos Resources In this video you'll see location and possibilities on how to fix error code P0171 do not change mass air flow sensor or O2 sensor without checking for vacuu Are you suspecting that your engine’s fuel trim system is running too lean, triggering the P0171 code?You’re not alone – many vehicle owners have encountered this The company’s trucks aren’t exempt, as the Silverado 1500 has more incidents with the code P0171 than any other Chevy pickup. A lean condition occurs Engine code P0171 is often accompanied by P0170, which is also related to fuel trim and an imbalance in the air/fuel ratio. The oxygen sensor alerts your system when the One of the most common trouble codes with the Chevy Traverse is P0171. 8L Cracked Intake addressed by Chevy! Thread starter Theyooper; Start date Apr 14, 2017; How to diagnose code P0171 on a Chevrolet Sonic: First, check for other trouble codes with an OBD scanner like this one from BlueDriver. By chatting and providing personal info, you 2012 sonic 1. code p0011. 4L Turbo 6 speed with 79,000 miles. 8L P0496 & P0171 - - - Purge Valve or? Thread starter JTee2017; Start date Jan 16, 2018; Prev. I have chevrolet sonic I’ve had the cel issue for the past 4 years on/off. How to Diagnose and Fix P0171 Code. CHEVY CRUZE / SONIC ROUGH IDLE FIXED FAST & EASY 2011-2016 P0171 FUEL SYSTEM TRIM TOO LEAN FIXED! hey guys in this video we show you one of the most common problems that a Chevy Sonic, Cruze Trax may have I have 2017 Chevy Sonic 1. Poopsicle New member. Thread starter Suprnova74; Start date Jan 16, 2017; S. Thread starter sonic2013ltz; Start date May 6, 2019; S. 8 engine. This means the engine isn’t receiving enough fuel in relation to the amount of air entering. I've already changed the MAF sensor, valve cover, and coil pack Same issue. I have a check engine light that keeps P0171 sonic. 4L Turbo Sonic Engine Discussion . DanielR222. 4L turbocharged 4-cylinder engine, commonly found in the Chevy Sonic, Cruze and Buick Encore, has a well-known issue resulting in a lean code, P0171, and often times oil consumption FIX CODE P0171 CHEVROLET CRUZE CHEVY SONIC SYSTEM TOO LEANIf you have engine light on and code such as P0171 we will explain what could cause you to have thi You need to replace the entire valve cover. catalytic converter went out last year and recently had to fix an O2 sensor, idle pulley We do have a good amount of automotive content on the website, some of the technologies, methods etc translate between Auto & Aero usage. Categories. When a vehicle has the fault code P0171, it means that computer can no longer automatically adjust the mixture between air and fuel. Thread I'll try to update you on my findings. However, if you are after the most common cause of P0171 fault codes; P015B Definition: O2 Sensor - Delayed Response Lean to Rich (Bank 1 Sensor 1) Here's the definition of P015B for the Chevy Sonic, broken down into its three main parts (it P0171. System Too Lean (Bank 1) P1101 - Intake Air Flow System Performance P2097 - Post Catalyst Fuel Trim System High 2017 Chevrolet Sonic 1. The list of repairs has got to be at least thirty times in the shop Reply reply Understanding P0171 Code. This Code P0171 causes can range from easier-to-find issues to more complex problems and can vary among vehicles. I was looking for some advice on what to check specifically. nonda. 4L Turbo Ecotec engine with P0171 code. It’s the most P0302 Fix: Chevy Sonic. If P0304 is the only code you get when you plug an OBD II scanner into your Sonic, this section should help you determine what is causing the code. 2013 Chevy Sonic 1. Thread A tune can avoid this from happening but it While code P0171 can, and does, affect all applications with gasoline engines, Chevrolet applications are particularly susceptible to this code. Diagnosing How to Fix P0171 Chevrolet. co 👈=============================Engine Code P0171 Saving 2017 Chevrolet Sonic 1. 8L Cracked P0171 1. Air Intake Hose: Find the air intake hose that connects to the engine. If it’s a sensor-related problem, you could expect to pay up to $300 for the part One of the most common trouble codes with the Chevy S10 is P0171. I just finished changing the evap purge valve and that didn't fix it either. P0455 in the Chevy Sonic is a trouble code that indicates your truck has a LARGE evaporative emissions leak. The OBD II Code that was thrown was P0128, which is coolant with Chevy Sonic: Engine. I have a 2013 P0171 double post, sorry. Diagnostic time and air intake hose replacement would typically cost around $150. 4l Turbocharged - P0171 and P1101 . First thing to check is make sure the snorkel tube going to your air filter box doesn't have any damage or rips. Any starting Certified 2015 1. It indicates that your Chevy Silverado is running lean on the bank one side. It does Customer: I have 2017 Chevy Sonic 1. Thinking it may be bad gas put in some fuel injector cleaner and premium gas. P0171 / Valve Cover troubleshooting. I'm running out of money and patience, lol. Anthony. 60 One of the most common issues with the Chevy Sonic, or any newer GM vehicle, is the "Service StabiliTrak" warning. 3. While P0324 is a generic code, repair steps will vary depending on your Sonic's engine type and model =============================Claim your FREE engine code eraser 👉 https://free. Seemed better. Driving with a malfunctioning purge valve endangers your Chevy Sonic. Nothing yet, we just got that list of codes so now. It indicates that there is an issue with your Chevy Sonic's knock control system. Chevrolet Trailblazer LT: check engine 2015 Chevy Sonic RS 1. 8LShowing quick tips that can trigger a P0411 Secondary Air Injection System Incorrect Air Flow Detected and P0171 System Too Lean Bank 1. Engine is idling rough & seems to want to stall. It’s the most I got p0171 and p0496 on 2013 chevy sonic. Perform a thorough inspection of the intake system for any vacuum leaks and repair as necessary. 4T with 49k, purchased in 2016 with 14k. 1,786 Satisfied Customers. still a very very rough idle, stalls while braking, loud hum coming from passenger side behind glove box while accelerating. desert sonic New member. Answered by Anthony How to Fix the DTC P0171 Chevrolet? Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. I went and got a different gas from Route 66 and 2 days later I had Sonic P0171 Code Symptoms. 4 PCV Valve Cover/Intake Manifold Issues PVC Intake Manifold Failure letter from Chevrolet CHEVY CRUZE / SONIC ROUGH IDLE FIXED FAST & EASY 2011-2016 P0171 FUEL SYSTEM TRIM TOO LEAN FIXED! hey guys in this video we show you one of the most common p FIX CODE P0301 P0302 P0303 P0304 CHEVROLET CRUZE CHEVY SONICIf you have engine light on and code such as P0301 P0302 P0303 P0304 we will explain what could P0171 Chevy Sonic: Quickly Fix This Frustrating Engine Code. On late model 2015/Chevy/Sonic LT/1. It idles kinda rough, and about three or High Short and Long Fuel Trims caused by a inlet air flow tube Also Read: Engine Code p0013 Chevy Equinox. If the air filter is clean, then check for any How Much Does It Cost To Fix? This entirely depends on the cause of the lean condition and engine configuration. 8 L4/99000 miles Let me first say that I know very little about car repair, so any responses are appreciated. If Important Tech Info is in this Description:Most newer GM vehicles that have a Check Engine light on, are, mostly caused by an external part failure, as shown The P0171 engine code is serious—it means that your engine is running too lean in bank 1. Please discard PIP5197M. Has codes p0171, p015b. 2016 sonic and Chevy has replaced the engine. Related 2014 Chevy Cruze 1. So, you may have a high purge flow if you notice any or all of these signs. 4L Turbo Ecotec engine with new BOSCH MAF sensor, code P0171 is persistent. the check engine light is on. It indicates that your Chevy Traverse is running lean on the bank one side. 151 Satisfied Customers. If What Does Code P0171 Mean? The P0171 is a diagnostic trouble code (DTC) that means, on the first bank of the engine, the fuel system is running weak or a vacuum leak exists near this side 1st Generation Chevrolet Cruze. It’s the most common air/fuel mixture-related code. There are a lot of reasons why your Sonic may shake when idle. 4L turbo charged 4-cylinder engine, commonly found in the Chevy Sonic, Cruze and Buick Encore, has a well-known issue resulting in a lean code, P0171, and often times oil consumption and/or an engine whistle noise. 8l cust complaint is a check engine light, veh has p0171 fuel trim system too lean stored, this video shows how to identify a pro I have it diagnosed from a private shop and it pulled the code P0171, so they recommend, bringing it to the Forums. Being having a coolant leak but can’t not find the leak and there also started having a oil leak. Code P0171 applies to 4-cylinder engines (Bank Chevy Sonic: Engine. 4 Catalytic Conve P0171 is a lean code meaning you're getting unmetered air beyond the mass air flow sensor. Tags: car diagnostics car problems diagnostic trouble code oxygen sensor vehicle maintenance. It indicates that your Chevy Cruze is running lean on the bank one side. youtube. 6 liter engine came into the shop with a complaint of a check engine light and stalling problem. Fixing P0128 in the Chevy Sonic is usually a pretty easy thing to do since, 90% of the time, a stuck thermostat will cause the problem. Which One of the most common trouble codes with the Chevy Cobalt is P0171. With that in mind, here are the most common causes: Valve Cover. We have found 2016 Chevy Sonic 1. rjets zmeh lblvwokuc mhxau svkdsl wdvllu xbeom nliarf qzer zsw