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Subaru Legacy GT Spec.: why when I put the key in the on position…

Customer Question
why when I put the...
why when I put the key in the on position my tem p gauge goes all the way up to hot?
Submitted: 3 years ago.Category: Subaru
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Customer reply replied 3 years ago
hi can some please answer my question?
Answered in 6 hours by:
5/27/2015
Subaru Mechanic: Gary, ASE Certified Technician replied 3 years ago
Gary
Gary, ASE Certified Technician
Category: Subaru
Satisfied Customers: 1,990
Experience: Senior Technician
Verified
Hi there,
If your gauge goes full scale hot even with a cold engine, the coolant temp sensor is probably grounded in the wiring. You need a scan tool to look at engine data for coolant temp.
Can you access a scan tool?
Gary
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