One of the most common trouble codes with the chevy sonic is the p0171 code. Heres a great youtube video on finding out what is causing the p0171 code to be thrown on your sonic. P0171 code definition system too lean bank 1 what the p0171 code means. P0171 obdii trouble code fuel system too lean bank 1. Code p0171 in a chevy sonic means that the fuel system is running too lean. I gave the intake hoses a quick lookover, didnt see any cracking like so many others have. Basically this means that an oxygen sensor in bank 1 has detected a lean condition too much oxygen in the exhaust. P0171 valve cover troubleshooting chevy sonic owners forum. Explore the 2020 chevy sonic small car, available with hatchback and sedan. Be sure to check out mike over at ngk to learn more about fuel trims and up your game when it comes to lean and rich codes. Chevy sonic whistles and idles rough mil on alldata. It idles kinda rough, and about three or four separate times, while stopped at a traffic light, the tcs light inexplicably came on but then shutoff when i started moving again. Combustion engines run most efficiently when they maintain an airfuel mixture ratio of 14.
Driving a car with the code p0171 can cause more damage to the engine over time, as when the engine runs lean, the combustion temperature is higher. I have codes for knock control system error, system too lean bank 1, mass or volume air flow. Get a quote and book an appointment online or speak to a service. Sonic is the small car that provides quick, responsive handling to help you take. Toyota prius maintenance toyota 4runner maintenance chevrolet impala. The lean condition can be caused by a vacuum leak, which introduces. P2097 sets when the ecm determines if the post catalyst ho2s fuel control system has been unable to adapt to a lean exhaust gas condition for. Chevrolet cruze and chevy sonic share many parts thats why it should help on chevy sonic too. Code p0171 applies to 4cylinder engines bank 1 as they generally have only one bank.
Get a quote and book an appointment online or speak to a service advisor at. Midas cleared this code for my fiance twice claiming it was bad gasoline. The obdii trouble code p0171 system too lean bank 1 means that the engine airfuel mixture is too lean, or there is too much air and too little fuel. If you have tall kids, a dog, or the need for copious cargo space, youd be better off moving up a class to a car like the chevrolet cruze.
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