Reprogramming Files For DTC P0420 (11-146-14)

Publication date: 2014-09-24
Reference number: 11-146-14

REPROGRAMMING FILES FOR DTC P0420

TECHNICAL SERVICE BULLETIN

Reference Number(s): 11-146-14, Date of Issue: September 24, 2014

SUBARU:

2014-2015 Forester

APPLICABILITY

2014-15MY Forester 2.0 DIT Models

INTRODUCTION

This bulletin announces the availability of reprogramming files to address DTC P0420 which may set as a result of an incomplete ECM calculation during catalyst diagnosis.

COUNTERMEASURE IN PRODUCTION

The new logic was incorporated into production starting with VIN F*499037.

PACK FILE APPLICABILITY

MODEL/MODEL YEAR	PAK FILE NAME	NEW ECM PART NUMBER	OLD ECM PART NUMBERS	NEW CID NUMBER
2014-2015MY Forester 2.0L Turbo	22611AW066.pak	22611AW066	22611AW060, 061, 062, 063, 064, 065	AF56B00B
2014-2015MY Forester 2.0L Turbo	22765AG972.pak	22765AG972	22765AG970, 971	LF61500B

NOTE: SOA now highly recommends connecting the Midtronics GR8 Diagnostic Battery Charger to the vehicle and utilizing the Power Supply Mode feature anytime a vehicle control module is being reprogrammed. Once the GR8 is connected to the vehicle, as long as the battery is fully charged, it takes less than 3 minutes to boot-up the charger, select the Power Supply Mode, and have the battery voltage stabilized and ready for reprogramming.

VERY IMPORTANT: This information is applicable to the Midtronics GR8 Diagnostic Battery Charger ONLY. It does not apply to any other brand/type of "generic" battery charger whatsoever. ONLY the GR8 and its Power Supply Mode feature has been tested and approved by Subaru of America, Inc. (SOA).

If the GR8 indicates the vehicle's battery must be charged, charge the battery using the GR8 before proceeding to reprogram the vehicle while using the Power Supply Mode.
Control module failures as a result of battery discharge during reprogramming are not a matter for warranty. Should any DTCs reset after the reprogramming update is performed, diagnose per the procedure outlined in the applicable Service Manual.

WARRANTY/CLAIM INFORMATION

For vehicles within the Basic New Car Limited and/or Emissions Warranty period, this repair may be claimed using the following information:

LABOR DESCRIPTION	LABOR OPERATION #	FAIL CODE	LABOR TIME
MFI OBDII ECM Reprogramming	A455-288	UPG-48	0.4

REMINDER: SOA strongly discourages the printing and/or local storage of service information as previously released information and electronic publications may be updated at any time. Always refer to STIS for the latest service information before performing any repairs .