Check Gauge Warning Indicator

WARNING: This page is about a different car, the 2004 Ford Pickup, 2004 Ford F550 Super Duty, 2004 Ford F450 Super Duty, 2004 Ford Excursion, and 2004 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

The check gauge warning indicator will illuminate when any of the three following conditions exist:

if the engine oil pressure drops below approximately 42 kPa (6 psi).
if the engine temperature exceeds approximately 121°C (250°F).
if the transmission temperature (automatic transmission only) reaches approximately 135°C (275°F).