DTC C1455: Power Unit Torque Range/Performance

WARNING: This page is about a different variant/trim than selected.

DTC detecting condition:

A fault is detected if an abnormal value in a torque-related signal from the HEV or electric brake booster is received for the predetermined time.

Trouble symptom:

VDC does not operate.
EyeSight does not operate. (Models with EyeSight)
Electric parking brake function does not operate.

CHECK HYBRID VEHICLE CONTROL ECM .
1. Start the engine.
2. Read the DTC of [P-HEV Hybrid Powertrain Control] using the Subaru Select Monitor. Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
  Are any DTCs displayed?
  
  Yes : Perform the diagnosis according to the DTC. Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)>LIST .
  
  No : Go to 2.
CHECK ELECTRIC BRAKE BOOSTER .
1. Start the engine.
2. Read the DTC of [Electric Brake Booster] using the Subaru Select Monitor. Ref. to ELECTRIC BRAKE BOOSTER (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
  Are any DTCs displayed?
  
  Yes : Perform the diagnosis according to the DTC. Ref. to ELECTRIC BRAKE BOOSTER (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)>LIST .
  
  No : Go to 3.
CHECK VDC CONTROL MODULE & H/U .
1. Using the Subaru Select Monitor, perform the clear memory of [Brake Control]. Ref. to COMMON (DIAG)>CLEAR MEMORY .
2. Execute the inspection mode. Ref. to BRAKE CONTROL (DIAGNOSTICS) (HEV)>INSPECTION MODE .
3. Read the DTC of [Brake Control] using the Subaru Select Monitor. Ref. to BRAKE CONTROL (DIAGNOSTICS) (HEV)>DIAGNOSTIC TROUBLE CODE (DTC) .
  Is the same DTC displayed?
  
  Yes : Replace the VDC Control Module & H/U. Ref. to VEHICLE DYNAMICS CONTROL (VDC)>VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM & H/U) .
  
  No : Go to 4.
CHECK DETECTION OF OTHER DTCS FOR VDC .
Read the DTC of [Brake Control] using the Subaru Select Monitor. Ref. to BRAKE CONTROL (DIAGNOSTICS) (HEV)>DIAGNOSTIC TROUBLE CODE (DTC) .

Is any other DTC displayed?

Yes : Perform the diagnosis according to the DTC. Ref. to BRAKE CONTROL (DIAGNOSTICS) (HEV)>Diagnostic Trouble Code (DTC)>LIST .

No : Currently, it is normal. There may have been a temporary poor contact in the harness and connector or a temporary noise interference.