Faster/Slower Vehicle Speed Than The Actual Speed Is Displayed

Trouble causes:

CAN communication failure
Vehicle speed sensor malfunction
Combination meter malfunction yes no

CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to LAN SYSTEM (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION .

CHECK THE ACTUAL VEHICLE SPEED .
Check that the vehicle speed indicated in the meter matches with the actual vehicle speed.

Does the vehicle speed match?

Yes : Currently, it is normal.

No : Go to 2 .
CHECK DTC .
Read the DTC of [Combination Meter] using the Subaru Select Monitor. Ref. to COMBINATION METER (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

Is DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE displayed? (Current malfunction)

Yes : Perform the diagnosis according to the basic diagnostic procedure in LAN SYSTEM (DIAGNOSTICS). Ref. to LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .

No : Go to 3 .
CHECK SPEEDOMETER .
Using the Subaru Select Monitor, check the following items in the [Active Test] of [Combination Meter]. Ref. to COMBINATION METER (DIAGNOSTICS)>ACTIVE TEST .
- Speedometer
Do the indicated vehicle speed on Subaru Select Monitor and the speedometer indication match?

Yes : Perform a unit inspection for the vehicle speed sensor.

No : Replace the combination meter. Ref. to INSTRUMENTATION/DRIVER INFO>COMBINATION METER .