Check Engine Coolant Temperature Sensor

WARNING: This page is about a different car, the 2007 Subaru Outback and 2007 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSTIC PROCEDURE CHART

Step	Check	Yes	No
1 CHECK COMMUNICATION ERROR DISPLAY. Turn the ignition switch to ON. Check that the error code is displayed in odo/trip meter. (Except for meter with MID)	Is the error code "Er xx" displayed on odo/trip meter? (Except for meter with MID) Or is the DTC of low speed LAN system detected?	Check the communication circuit. <Ref. to COMMUNICATION ERROR DISPLAY , INSPECTION, Combination Meter System .>	Go to step 2.
2 CHECK ENGINE COOLANT TEMPERATURE SENSOR. Check the engine coolant temperature sensor. <Ref. to BASIC DIAGNOSTIC PROCEDURE (H4SO). > <Ref. to BASIC DIAGNOSTIC PROCEDURE (H4DOTC). > <Ref. to BASIC DIAGNOSTIC PROCEDURE (H6DO). >	Is the engine coolant temperature sensor OK?	Replace the meter case assembly.	Replace the engine coolant temperature sensor.