DTCs P219C, D, E or F- ECM Reprogramming File Availability – 2019-2020 Subaru Crosstrek Hybrid (PHEV)

NHTSA ID Number: 10171918

Manufacturer Communication Number: 11-198-20

Summary

This bulletin announces availability of reprogramming files to optimize the engine’s electronic control module (ECM). These new files address concerns of the check engine light coming on and setting any of the following DTCs for Air-Fuel Ratio Imbalance: P219C, P219D, P219E or P219F. The ECM parameters for air-fuel (A/F) calculation have been revised.

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Reprogramming File Availability for Startability and Idle Stability at Low Temperatures – 2014-2018 Subaru Forester & 2015-2020 WRX 2.0L DIT

NHTSA ID Number: 10171919

Manufacturer Communication Number: 11-199-20

Summary

This bulletin announces availability of reprogramming files to optimize the Engine Control Module (ECM). The new logic will address isolated concerns of a hard start condition occurring in cold weather (+10 degrees Fahrenheit or lower) and / or high-altitude areas. When this scenario occurs, the A/F learning control values move toward lean.

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Reprogramming File Availability for Hard Starting in Sub-Freezing Temperatures, DTC P0400 and Surging in High Altitudes – 2015-2020 Subaru

NHTSA ID Number: 10171925

Manufacturer Communication Number: 11-200-20R

Summary

This bulletin announces the availability of reprogramming files to optimize the Engine Control Module (ECM).

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WUU-06 – ECM Reprogramming for DTC C1424 – 2019-2020 Subaru Ascent & 2020 Legacy & Outback

NHTSA ID Number: 10169877

Manufacturer Communication Number: WUU-06R

Summary

In the interest of customer satisfaction, Subaru of America, Inc. (Subaru) is initiating a Service Program to reprogram the Engine Control Module (ECM) on certain 2019-2020MY Ascent and 2020MY Legacy & Outback vehicles. In some vehicles, the current software may cause the sub learning value control to operate improperly during the wake-up mode of the ECM. This could cause repeated erroneous learning of the accelerator position which can result in the disabling of the VDC function. When the VDC function is disabled, EyeSight, Reverse Automatic Braking (RAB), and Electronic Parking Brake (EPB) auto release functions are disabled by the VDC fail signal causing the VDC, EyeSight, RAB and EPB warning lamps to illuminate. This program affects approximately 115,729 vehicles.

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