Engine got wet, now it will not stay running and codes p0171 and p1685

2001 DODGE DAKOTA
84,587 MILES • 5.9L • V8 • 2WD • AUTOMATIC
Avatar
SNIDER327
  • MEMBER
  • 3 POSTS
It will start up but shuts off, the motor got wet in the rain it is showing two codes p0171 and p1685. Any help would be greatly appreciated.
Jul 9, 2022 at 1:36 AM
Advertisement
Avatar
STRAILER
  • Experienced Mechanic
  • 55,273 POSTS
The p0171 code is for mixture and won't keep the car from starting. the P1685 code is the one that says the car doesn't recognize the key, do you have a spare key by chance? I would try that, or let's try to hard reboot the system, remove the negative battery cable and hold it against the positive battery terminal for 1 minute, this will discharge all capacitors helping the system clear itself out and restart. Also, when you try to start it does the security light flash? If so, this guide can help fix it:

https://www.2carpros.com/articles/how-to-reset-a-security-system


Please run down this guide and report back.
Jul 10, 2022 at 4:21 AM
Avatar
SNIDER327
  • MEMBER
  • 3 POSTS
Thank you for the answer to my question. It was the spare key that I was using. Your information was invaluable to me.
Jul 13, 2022 at 1:40 AM
Avatar
STRAILER
  • Experienced Mechanic
  • 55,273 POSTS
Do you have the original key and have you tried it?
Jul 13, 2022 at 5:15 AM
Avatar
SNIDER327
  • MEMBER
  • 3 POSTS
Yes, that what it was. thanks for the answer.
Jul 14, 2022 at 2:13 AM
Avatar
STRAILER
  • Experienced Mechanic
  • 55,273 POSTS
Good to hear, please use 2CarPros anytime we are here to help.
Jul 14, 2022 at 3:37 AM
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 Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.