p0171 code

1998 TOYOTA COROLLA
230,000 MILES • AUTOMATIC
Avatar
ALYSSAZ88
  • MEMBER
  • 1 POST
my car is slow to accelerate. i have a p0171 code. i replaced my o2 sensor, but the code came back on. what else could it be?
Jun 15, 2016 at 12:14 AM
Avatar
WRENCHTECH
  • ✓Experienced Mechanic
  • 20,761 POSTS
I do not know why you would replace an 0/2 for that code. It is telling you that the engine is running too lean. You need to look for causes starting with vacuum leaks. A smoke machine is the best way to find those.
Jun 15, 2016 at 1:39 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle