Code P0483

2003 SUBARU IMPREZA
136,000 MILES
Avatar
[email protected]
  • MEMBER
  • 1 POST
Engine light came on although the car seems to be running okay. I was told by a mechanic that it could be cooling system issue; thermostat, radiator leak, hose leak, cooling fan. There seems to be plenty of coolant in the reservoir, but the radiator is a bit low. or it could be cooling fan relay connector or possibly flush cooling system and replace water pump.

What do you think?
Mar 14, 2017 at 4:15 PM
Advertisement
Avatar
STEVE W.
  • CERTIFIED EXPERT
  • 15,113 POSTS
P0483, cooling fan rationality check malfunction. It means that the cooling fan has been commanded to turn on or off, but the ECM did not detect a voltage change that indicated that the fan actually did turn on or off.

Test the cooling fan relay and its circuit. The usual suspect is a bad relay, but it could be the wiring to it.
Mar 14, 2017 at 7:34 PM