Code result
P0483
Cooling Fan Rationality Check Malfunction
Moderate severity
What it means
The ECM detects that the cooling fan response does not match command. Either the fan rotates without command, fails to rotate when commanded or its current draw is implausible.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Fan motor seized or worn
highOne of the most commonly reported causes for this code — check this first.
Fan relay defective
mediumA plausible cause — test and verify before replacing parts.
Wiring or connector fault
lowLess common, but worth ruling out after the more likely causes.
Related help
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