AT OIL TEMP Warning Light Display: Operation

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

When any on-board diagnostics item is malfunctioning, the AT OIL TEMP light blinks. The light keeps blinking from when the malfunction is detected after starting the engine, until the ignition switch is turned OFF. The faulty parts or unit can be identified by reading DTCs. Problems which occurred previously can also be identified through the memory function. If the AT OIL TEMP light does not blink although a problem is occurring, the problem can be determined by checking the performance characteristics of each sensor using the Subaru Select Monitor. Indicator light signal patterns are as shown in the figure.

Fig 1: At Oil Temp Warning Light Signal Patterns

Courtesy of SUBARU OF AMERICA, INC.

When the AT OIL TEMP light does not operate normally, check the AT OIL TEMP light circuit. < Refer to INSPECTION , AT OIL TEMP Warning Light Display. >