DTC C1424: Engine Control Module: Trouble symptom

Hill start assist does not operate.
EyeSight does not operate. (Models with EyeSight)

Fig 1: Engine Control Module - Diagnostic Trouble Code Procedure Chart

G11257690

Courtesy of SUBARU OF AMERICA, INC.

CHECK Engine Control Module .
1. Start the engine.
2. Read the DTC relating the Engine Control Module using the Subaru Select Monitor. Ref. to ENGINE (DIAGNOSTICS) (H4DO)>Diagnostic Trouble Code (DTC) .
Are any DTCs displayed?
- Yes : Perform the diagnosis according to DTC. Ref. to ENGINE (DIAGNOSTICS) (H4DO)>Diagnostic Trouble Code (DTC)>LIST .
- No : Go to 2 .
CHECK VDC Control Module & H/U .
1. Using the Subaru Select Monitor, perform the clear memory.
2. Execute the inspection mode. Ref. to BRAKE CONTROL (DIAGNOSTICS)>Inspection Mode .
3. Read the DTC using Subaru Select Monitor. Ref. to BRAKE CONTROL (DIAGNOSTICS)>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 (VDC Control Module & H/U) .
- No : Go to 3 .
CHECK DETECTION OF OTHER DTCS FOR VDC .
Read the DTC using Subaru Select Monitor. Ref. to BRAKE CONTROL (DIAGNOSTICS)>Diagnostic Trouble Code (DTC) .

Is any other DTC displayed?
- Yes : Perform the diagnosis according to DTC. Ref. to BRAKE CONTROL (DIAGNOSTICS)>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.