Q: P0202 and p0171

asked by on

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.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. P0202 and p0171

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Why does my Shifter moves freely, but wont shift? A small piece in steering column has broken off. 2006 Dodge Dakota

Hi - you have diagnosed this correctly! Part of the shift linkage has broken, preventing gear selection. I would recommend a shift linkage inspection to determine what parts to order by a mobile, professional mechanic, such as one from YourMechanic,...

Q: Q: Instrument cluster not working

This may be related to a short, a faulty gauge cluster or a faulty instrument cluster voltage regulator. The instrument voltage regulator regulates the voltage supplied to the various gauges in your vehicle’s dash. When this is not working properly,...

Q: Transmison slipping after 3000 rpms on every gear When hot.

Hi Richard. Thanks for contacting us today. A slipping transmission with a manual is caused by a clutch-system failure. In some instances, it's due to a master cylinder that is either leaking or damaged. The recommended repair for this is...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.