Diagnostic Tips

DTC P0116 and / or Hard Starting in Cold Weather on Vehicles Equipped with Block Heater Accessory – 2015-2019 Subaru Legacy & Outback 2015-2020 WRX STI

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NHTSA ID Number: 10188163 Manufacturer Communication Number: 11-201-21 Summary This bulletin announces availability of reprogramming files to optimize the Engine Control Module (ECM). The new files will address DTC P0116 and hard starting in cold temperature concerns when an accessory engine block heater is utilized.   NUMBER: 11-201-21 DATE: 02/04/21 APPLICABILITY: 2015-19MY Legacy and Outback 3.6L Models … Read more

DTC P1160 Extended Cranking in Cold Temperatures – 2020-2021 Subaru Legacy & Outback 2019-2021 Ascent

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NHTSA ID Number: 10188167 Manufacturer Communication Number: 11-202-21R Summary This bulletin announces availability of reprogramming files for the Engine Control Module (ECM).   NUMBER:  11-202-21R DATE:  02/04/21 REVISED:  02/08/21 APPLICABILITY: 2020-21MY Legacy and Outback w/ 2.4L DIT 2019-21MY Ascent SUBJECT: DTC P1160 / Extended Cranking in Cold Temperatures   INTRODUCTION: This bulletin announces availability of reprogramming files … Read more

Ignition Coils and Engine Harness Design Changes to Address DTCs P0351, P0352, P0353 and / or P0354 – 2013-2014 Subaru BRZ

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2014 Subaru BRZ

NHTSA ID Number: 10187309 Manufacturer Communication Number: 07-120-17R Summary This Service Information Bulletin announces design changes made to the ignition coil and engine wiring harness in response to a limited number of cases related to the ignition coil primary / secondary DTCs listed.   NUMBER: 07-120-17R DATE: 07/07/17 REVISED: 09/22/17   INTRODUCTION: This Service Information Bulletin announces … Read more

Reprogramming for “Shock” Felt During Low-Speed Braking – 2015-2016 Subaru Crosstrek Hybrid (HEV)

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2016 Subaru Crosstrek Hybrid

NHTSA ID Number: 10189662 Manufacturer Communication Number: 16-110-18R Summary This bulletin announces reprogramming file availability to optimize the Transmission Control Module (TCMeBay). These files will address isolated customer concerns of a “shock” or “bump” feeling felt during low speed braking during engine warm-up after a cold soak.   NUMBER: 16-110-18R DATE: 01/30/18 REVISED: 03/03/21 APPLICABILITY: 2015-2016MY Crosstrek … Read more

DTC P015A or P015B / Delayed O2 Sensor Response – 2019-2020 Subaru Crosstrek 2.0 Hybrid (PHEV)

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2020 Subaru Crosstrek

NHTSA ID Number: 10198740 Manufacturer Communication Number: 11-203-21 Summary This bulletin announces availability of new reprograming files to correct P015A or P015B. (PHEV only)   NUMBER: 11-203-21 DATE:  06/01/21 INTRODUCTION: This bulletin announces availability of new reprograming files to correct P015A or P015B. In rare cases, these DTCs may set when stabbing acceleration (ON then quickly OFF … Read more