DTC U1235: LOST COMMUNICATION WITH EyeSight: Trouble Symptom

2014 Subaru Forester 2.5i, Eng CD FB25BA, Standard TransSECTION Trouble Symptom

Cooperation control of EyeSight does not operate properly.

DTC PROCEDURE

Step Check Yes No
1 CHECK PERFORMING OF BASIC DIAGNOSTIC PROCEDURE  . Was the basic diagnostic procedure performed up to step 8? Go to step . Perform the basic diagnostic procedure. < Ref. to BASIC DIAGNOSTIC PROCEDURE . >
2 CHECK DTC  .
Check the displayed DTC.
Is U1235 a current malfunction? Go to step . Go to step .
3 CHECK DTC  .
Using the Subaru Select Monitor, read DTC of all the systems.
Is the EyeSight data no-receive detected in several modules? Replace the stereo camera. < Ref. to STEREO CAMERA . > Go to step .
4 REPLACE MODULE  .
  1. Replace the stereo camera.
  2. Read the DTC using Subaru Select Monitor.
Is U1235 a current malfunction? Go to step . System is normal.
5 CHECK MODULE  .
  1. Reinstall the stereo camera.
  2. Replace the module that the DTC has been detected.
  3. Read the DTC using Subaru Select Monitor.
Is U1235 a current malfunction? Replace the stereo camera. < Ref. to STEREO CAMERA . > System is normal.
6 CHECK HARNESS  .
  1. Shake the harness, and check for poor contact.
  2. Read the DTC using Subaru Select Monitor.
Is U1235 a current malfunction? Repair the poor contact of harness, or replace the harness. Go to step .
7 CHECK CONNECTOR  .
Check the connector used for high speed CAN for poor contact.
Is there poor contact of connector? Repair the connector that has poor contact, or replace harness. It is possible that temporary poor communication occurs. Delete the DTC.
RENDER: 1.0x

NO RELATED

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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.
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