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Home >> Audi >> 2015 >> A4 Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 420 (Electronically Controlled Brake System (Diagnostic Codes & Symptom Tests)) >> Electronically Controlled Brake System >> DTC C1345/66: Linear Solenoid Valve Offset Learning Undone; DTC C1368/67: Linear Solenoid Valve Offset Malfunction [08/2013 - ] >> Procedure

DTC C1345/66: Linear Solenoid Valve Offset Learning Undone; DTC C1368/67: Linear Solenoid Valve Offset Malfunction [08/2013 - ]: Procedure

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DTC 
    1. Clear the DTCs. Refer to DTC CHECK / CLEAR [08/2013 - ] .
    2. Turn the power switch off.
    3. Turn the power switch on (IG).
    4. Check the DTCs (electronically controlled brake system and hybrid control system) that are output. Refer to DTC CHECK / CLEAR [08/2013 - ] for the electronically controlled brake system or refer to DTC CHECK / CLEAR [08/2013 - ] for the hybrid control system).

      Result

      Result Proceed to
      DTCs (except C1345/66, C1368/67 and hybrid control system DTCs) are not output. A
      Hybrid control system DTCs are output. B
      DTCs (except C1345/66 and/or C1368/67) are output. C

      HINT: 

      Before performing initialization and calibration of the linear solenoid valve, C1203/95 will be output.

    B → See step   4 

    C → See step   5 

    A: Go to next step 

  2. PERFORM INITIALIZATION AND CALIBRATION OF LINEAR SOLENOID VALVE 
    1. Turn the power switch off.
    2. Perform initialization and calibration of the linear solenoid valve. Refer to INITIALIZATION [08/2013 - ] .

    NEXT: Go to next step 

  3. RECONFIRM DTC 
    1. Turn the power switch off.
    2. Clear the DTCs. Refer to DTC CHECK / CLEAR [08/2013 - ] .
    3. Turn the power switch on (IG).
    4. Check if the same DTC is output. Refer to DTC CHECK / CLEAR [08/2013 - ] .

      Result

      Result Proceed to
      DTCs C1345/66 and C1368/67 are not output. A
      DTCs C1345/66 and/or C1368/67 are output. B

    B → See step   6 

    A → END 

  4. INSPECT HYBRID CONTROL SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ] 
  5. REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2013 - ] 
  6. REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to  REMOVAL [08/2013 - ]