Diagnosis and Repair for AVCS-Related DTCs – 2011-2013 Subaru

NUMBER: 02-132-12R
DATE: 08/21/12
REVISED: 06/10/15

APPLICABILITY:2012 – 13MY Impreza and XV Crosstrek NA (FB Engine)
2013MY BRZ (FA Engine)
2013MY Legacy and Outback (FB Engine)
2011– 13MY Forester NA (FB Engine)
SUBJECT:Diagnosis and Repair for AVCS-Related DTCs P000A, P000B, P000C, P000D, P0011, P0014, P0021 and P0024

 

INTRODUCTION

This Bulletin provides a procedure for diagnosis and determination of necessary part replacement in the event any of the “AVCS Slow Response” or “AVCS System Failure” DTCs listed above are found to be stored in the ECM memory. A possible cause of these conditions is contamination within the camshaft sprocket and / or oil control solenoid valve (OCV) mechanism.

 

COUNTERMEASURE IN PRODUCTION

Countermeasures were incorporated into production during July, 2012 starting with the following VINs:

MODELVEHICLE TYPESTARTING VIN FOR CAMSHAFT SPROCKET COUNTERMEASURESTARTING VIN FOR OIL CONTROL SOLENOID VALVE COUNTERMEASURE
BRZ–D*603215D*603362
Impreza and XV Crosstrek (Exc. WRX & STI)4-DoorD*004206D*004655
5-DoorD*204371D*205723
Legacy–D*006591D*006243
Outback–D*213584D*212977
Forester–D*417742D*419507

 

SERVICE PROCEDURE / INFORMATION

NOTES: Only the Intake-related DTCs are applicable to Legacy, Outback and Forester models.

  • Using the SSMIII, determine which DTC is stored.
  • Determine the location of the suspect component using the DTC List on page 3.
  • Swap the Oil Control Solenoid Valves side-to-side (intake to intake or exhaust to exhaust, not between intake and exhaust on same side) following the procedure in the applicable Service Manual.

NOTE: The o-ring and nylon backer ring on the OCV must be replaced prior to reinstallation as they both are one-time use items.

  • Clear the ECM memory.
  • Perform the model-specific Drive Cycle or Inspection Mode procedure for the corresponding DTC as shown in the chart on the next page.
  • Follow the applicable procedure below for locating either Inspection Mode or Drive Cycle instructions to coincide with the reference chart found on page 3.
  1. For BRZ: Using the Service Diagnostics tab on the STIS home page, enter your vehicle search parameters (example: 2013 > BRZ). Next, using the DTC tab, enter P0021 for INTAKE-related DTCs or P0024 for EXHAUST-related DTCs. Select the applicable link from your search result (example: P0021: Camshaft Position “A” – Timing Over-Advanced or System Performance (Bank 2)). Follow the diagnostic outline down to TEST DRIVE (for Drive Cycle) information.
  2. For All Other : Using the Service Diagnostics tab on the STIS home page, enter your vehicle search parameters (example: 2013 > Outback). Next, enter specific DTC into the search term box. Select the applicable link from your search result (examples: ENGINE (DIAGNOSTICS) (H4DO) > Drive Cycle > PROCEDURE or ENGINE (DIAGNOSTICS) (H4DO) > Inspection Mode > PROCEDURE).
DTCDESCRIPTIONRH / LHINTAKE / EXHAUSTVEHICLE MODEL AND ENGINE TYPE (FA, FB)
BRZ (FA)“2012 – 13MY Impreza, XV (FB)”“2011-13MY Forester (FB)”“2013MY LEG & Outback (FB)”
P000AA Camshaft Position Slow Response (Bank 1)RHIntakeBRZ Drive Cycle (Refer to Service Manual)“Drive Cycle “”C”” (Refer to Service Manual)”Not Applicable“Drive Cycle “”C”” (Refer to Service Manual)”
P000BB Camshaft Position Slow Response (Bank 1)RHExhaustBRZ Drive Cycle (Refer to Service Manual)“Drive Cycle “”C”” (Refer to Service Manual)”Not ApplicableNot Applicable
P000CA Camshaft Position Slow Response (Bank 2)LHIntakeBRZ Drive Cycle (Refer to Service Manual)“Drive Cycle “”C”” (Refer to Service Manual)”Not Applicable“Drive Cycle “”C”” (Refer to Service Manual)”
P000DB Camshaft Position Slow Response (Bank 2)LHExhaustBRZ Drive Cycle (Refer to Service Manual)“Drive Cycle “”C”” (Refer to Service Manual)”Not ApplicableNot Applicable
P0011Intake Camshaft Position – Timing Over-Advanced or System Performance (Bank 1)RHIntakeBRZ Drive Cycle (Refer to Service Manual)“Inspection Mode (Refer to Service Manual)”“Inspection Mode (Refer to Service Manual)”“Drive Cycle “”C”” (Refer to Service Manual)”
P0014Exhaust AVCS System 1 (Range / Performance)RHExhaustBRZ Drive Cycle (Refer to Service Manual)“Inspection Mode (Refer to Service Manual)”Not ApplicableNot Applicable
P0021Intake Camshaft Position – Timing Over-Advanced or System Performance (Bank 2)LHIntakeBRZ Drive Cycle (Refer to Service Manual)“Inspection Mode (Refer to Service Manual)”“Inspection Mode (Refer to Service Manual)”“Drive Cycle “”C”” (Refer to Service Manual)”
P0024Exhaust AVCS System 2 (Range / Performance)LHExhaustBRZ Drive Cycle (Refer to Service Manual)“Inspection Mode (Refer to Service Manual)”Not ApplicableNot Applicable

 

  • Does the suspect component / problem location change to the opposite bank of the engine by resetting the applicable DTC?
    • YES– Replace the suspect OCV with a new part (including a new o-ring and backer ring).
    • NO– Replace the suspect camshaft sprocket with a new part. (It is not necessary to return OCVs to their original positions.)

 

IMPORTANT: After any component replacement, perform the applicable Drive Cycle or Inspection Mode procedure again to confirm the repair.



NHTSA ID Number: 10080600

Manufacturer Communication Number: 02-132-12R

Summary

THIS BULLETIN PROVIDES A PROCEDURE FOR DIAGNOSIS AND DETERMINATION OF NECESSARY PART REPLACEMENT IN THE EVENT ANY OF THE “AVCS SLOW RESPONSE” OR “AVCS SYSTEM FAILURE” DTCS LISTED ABOVE ARE FOUND TO BE STORED IN THE ECM MEMORY.

 

1 Associated Document

Service Bulletin Document

NUMBER: 02-132-12R
DATE: 08/21/12
REVISED: 01/19/15

https://www.nhtsa.gov/recalls?nhtsaId=10080600

SB-10080600-0699.pdf 266.81KB


NHTSA ID Number: 10232507

Manufacturer Communication Number: 0213212R

Summary

Diagnosis and Repair for AVCS-Related DTCs

 

1 Associated Document

Manufacturer Communications

NUMBER: 02-132-12R
DATE: 08/21/12
REVISED: 06/16/14

https://www.nhtsa.gov/recalls?nhtsaId=10232507

MC-10232507-9999.pdf 279.956KB


NHTSA ID Number: 10235837

Manufacturer Communication Number: 0213212R

Summary

Diagnosis and Repair for AVCS-Related DTCs

  

1 Associated Document

Manufacturer Communications

NUMBER: 02-132-12R
DATE: 08/21/12
REVISED: 01/21/13

https://www.nhtsa.gov/recalls?nhtsaId=10235837

MC-10235837-9999.pdf 437.706KB


NHTSA ID Number: 10089952

Manufacturer Communication Number: 02-132-12R

Summary

THIS BULLETIN PROVIDES A PROCEDURE FOR DIAGNOSIS AND DETERMINATION OF NECESSARY PART REPLACEMENT IN THE EVENT ANY OF THE “AVCS SLOW RESPONSE” OR “AVCS SYSTEM FAILURE” DTCS LISTED ABOVE ARE FOUND TO BE STORED IN THE ECM MEMORY. A POSSIBLE CAUSE OF THESE CONDITIONS IS CONTAMINATION WITHIN THE CAMSHAFT SPROCKET AND / OR OIL CONTROL SOLENOID VALVE (OCV) MECHANISM.

 

1 Associated Document

Service Bulletin Document

NUMBER: 02-132-12R
DATE: 08/21/12
REVISED: 01/21/13

https://www.nhtsa.gov/recalls?nhtsaId=10089952

SB-10089952-0699.pdf 723.308KB


NHTSA ID Number: 10065112

Manufacturer Communication Number: 02-132-12R

Summary

SUMMARY TO BE PROVIDED ON A FUTURE DATE.

 

1 Associated Document

Service Bulletin Document

NUMBER: 02-132-12R
DATE: 08/21/12
REVISED: 01/21/13

https://www.nhtsa.gov/recalls?nhtsaId=10065112

SB-10065112-3639.pdf 437.706KB


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