Q: P0202 and p0171

asked by on January 30, 2017

I have been reading up on these codes for a little bit and seems like no one has solved the problem on what p0171 is. Wouldn't it be cause by the code p0202? So if I fixed p0202 code p0171 should go away right? Or I would have to clear it with a diagnostics tool

My car has 129000 miles.
My car has an automatic transmission.

Hi there. We have an article posted on this website that outlines the common causes and sources of the P0171 OBD-II trouble code that you should take time to read. In regards to the other code causing this one to trigger; that’s not how the system works. Each code is independently triggered based on a unique diagnostic code stored in the ECU. Many codes are GENERIC and cover multiple components; however, the individual symptom is unique. And yes, if you make a repair, you have to clear all OBD-II codes with a professional digital diagnostic tool in order for the computer to reset.

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