SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSSUBARU2022IMPREZA BASE, 4D SEDAN, AUTOMATIC CVT TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 3 (LAN COMMUNICATION SYSTEM (DIAGNOSTICS) (HEV))DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)DTC U0110: LOST COMMUNICATION WITH DRIVE MOTOR CONTROL MODULE "A"
2022 Subaru Impreza Base, 4D Sedan, Automatic CVT Trans

DTC U0110: Lost Communication With Drive Motor Control Module "A"

2022 Subaru Impreza Base, 4D Sedan, Automatic CVT TransSECTION DTC U0110: Lost Communication With Drive Motor Control Module "A"
WARNING: This page is about a different car, the 2022 Subaru Crosstrek. However, it is still accessible from the selected car via links, so may be relevant.

DTC detecting condition: 

No data is received from Inverter with converter assembly.

Trouble symptom: 

Cooperation control with hybrid system may not operate properly.

CAUTION:

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

  1. CHECK CAN COMMUNICATION HARNESS  .

    Perform the basic diagnostic procedure to check for fault in CAN communication harness. Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>BASIC DIAGNOSTIC PROCEDURE .

    Was the basic diagnostic procedure performed up to step 7?

    Yes:  Go to  2.

    No:  Perform the basic diagnostic procedure. Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>BASIC DIAGNOSTIC PROCEDURE .

  2. CHECK DTC (OTHER THAN U-CODE)  .

    Check the displayed DTC.

    Is DTC other than U*** displayed? (Current malfunction)

    Yes:  Perform the diagnosis for DTCs other than the displayed U-code.

    No:  Go to  3.

  3. CHECK DTC  .

    Check the displayed DTC.

    Is DTC U0110 displayed? (Current malfunction)

    Yes:  Go to  4.

    No:  Go to  6.

  4. CHECK DTC  .
    1. Check CAN communication circuit. Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>CAN COMMUNICATION CIRCUIT CHECK .
    2. Using the Subaru Select Monitor, read all DTCs. Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>DIAGNOSTIC TROUBLE CODE (DTC) .

    Is DTC U0110 displayed? (Current malfunction)

    Yes:  Go to  5.

    No:  Go to  6.

  5. CHECK DTC  .

    Using the Subaru Select Monitor, read DTC of all the systems. Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>DIAGNOSTIC TROUBLE CODE (DTC) .

    Is DTC U0110 detected in several modules? (Current malfunction)

    Yes:  Replace Inverter with converter assembly. Ref. to HYBRID ELECTRIC VEHICLE>INVERTER AND CONVERTER ASSEMBLY .

    No:  Replace the module that the DTC has been detected.

  6. CHECK HARNESS  .
    1. Shake the harness, and check for poor contact.
    2. Using the Subaru Select Monitor, read all DTCs. Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>DIAGNOSTIC TROUBLE CODE (DTC) .

    Is DTC U0110 displayed? (Current malfunction)

    Yes:  Repair the poor contact of harness, or replace the harness.

    No:  Go to  7.

  7. CHECK CONNECTOR  .

    Check the connector used for high speed CAN for poor contact.

    Is there poor contact of connector?

    Yes:  Repair the connector that has poor contact, or replace harness.

    No:  It is possible that temporary poor communication occurs. Delete the DTC.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.