Subaru Forester 2010 diesel error codes

[nipsukka]

Hi, I checked the error codes since the engine warning light has been on continuously for a while now. At the same time, the traction control light is on, and the cruise control does not work.

The vehicle in question is a 2010 Subaru Forester Diesel.

A little background: the issue started nearly two months ago during a holiday trip. At that time, the lights would turn on, but they went off every time after about five starts and stayed off for a few days. For the past couple of weeks, they've been on continuously. Today, I managed to read the error codes:

P1380 - Glow plug relay circuit low
P2565 - Turbocharger boost control position sensor A, circuit high

C0057 - ECM control system (EAM)
C0071 - Steering angle sensor malfunction
C0042 - ECU power supply voltage

B1101 - Battery power/supply malfunction
B1102 - Battery power/supply malfunction, spare
B1403 - E/G request NG
B1500 - Keyless UART communication malfunction

Where should I start with this? At home, I was thinking of checking the Battery first, but it's unlikely that so many problems are caused just by that. During the holiday, the front right tire was worn out (note, I’m not sure if that could also be caused by some fault).

The car drives and runs normally, doesn't consume more than usual, doesn't make any unusual noises, and accelerates normally.

Or should I already start considering leaving the car? :D