P1281 OBD code Engine stays to cool

2001 JEEP GRAND CHEROKEE
226,000 MILES • 4.0L • 6 CYL • 4WD • AUTOMATIC
Avatar
BOZONONO
  • MEMBER
  • 1 POST
This code continues on my OBD reader. Could the thermostat sticking open be the cause? I just replaced it 2 months ago. What sensor tells the computer what the engine temperature is or should be?
Oct 17, 2015 at 10:35 AM
Advertisement
Avatar
CARADIODOC
  • ✓Experienced Mechanic
  • 34,340 POSTS
Forget about it. Every Chrysler product sets that code in cold weather, but it will not turn on the Check Engine light so no one is ever aware of it. The two-wire coolant temperature sensor tells the Engine Computer what the temperature is. This code will set when the coolant doesn't reach a specific temperature within six minutes of starting the engine. If you start it and let it idle or drive slowly for two or three minutes, you won't reach the temperature in six minutes.
Oct 17, 2015 at 1:35 PM
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.