Powertrain
generic / SAE
P0493
Fan Overspeed
Fan Overspeed: the control module has detected this fault condition.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number4 / 93
Possible causes
- Fan relay welded closed - fan runs uncontrolled high
- PWM line shorted to supply medium
- Tachometer feedback miscalibrated low
Inspection / repair
- Difficulty: medium
- DIY: possible
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References
sae:J2012