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Engine Temperature Warning Light: What It Means & What to Do

Severity: High Stop or minimize driving and get it looked at right away.

What it means

The engine is overheating. Driving while overheated can warp the cylinder head or blow the head gasket.

Typical color: Red (blue on some cars when cold)

Colors & variants

  • Red: overheating
  • Blue: engine still cold, normal after startup

What to do

  • Pull over and turn off the engine
  • Never open a hot radiator cap
  • Check coolant level once cool
  • Get the cooling system inspected

Related engine codes