2001 GMC Jimmy My mechanic didn't know what this meant!!

2001 GMC JIMMY
Avatar
CARLIE
  • MEMBER
  • 1 POST
Electrical problem
2001 GMC Jimmy 6 cyl Four Wheel Drive Automatic

My service engine light came on so I took my car to my local mechanic. The code read P0452B: Fuel tank pressure sensor circuit, low voltage. My mechanic had never run into that and didn't know how to proceed. He turned off the service engine light twice, but it continues to come on. Can you tell me what the problem is and what to tell my mechanic so it can be remedied? Thanks!
Oct 1, 2008 at 2:04 AM
Advertisement
Avatar
2CARPRO JACK
  • ✓ASE Certified Mechanic
  • 11,533 POSTS
  • ASE Certified Mechanic
That is a sensor locted on top of the fuel tank.Most likely a bad sensor, but need to check for 5 volt reference first and ground
Oct 1, 2008 at 8:19 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.