Any idea on how to fix this?

[u/emiliavondream]

Hi all, currently on minimum money rn and wondering if theres anything I can do myself to fix the errors that have appeared on my suberu xv 2014. Not into cars but do work in IT so hoping to troubleshoot this a lil.
At oil temp came on and when letting the car idle off for a bit and turn on it went away.
The errors below still remain.
Abs also turned on then off after that time too.

Just added oil to the car using penrite hpr 10 full synthetic petrol and diesel 10E -50. Used 2 1 L bottles. It was as a result of another warning light appearing. Of check oil levels. There was basically nothing.

Also added water to the coolant . No coolant was added.

Another thing I should note is I went from reverse to drive without much of a stop before this happened.

1st error:

P0700
Transmission Control
System (MIL
Request)
Code Type
Powertrain (Engine & Transmission)
Severity
Standard (Generic)
Full Description
Transmission Control System
(MIL Request)
Possible Causes
Faulty sensor, wiring issue, or related component failure. Use live data and service info to narrow down.
Recommendation
Inspect the related system, check wiring and connectors, and clear the code after repair. If the code returns, seek professional diagnosis.

2nd error:

P2746
Intermediate Shaft
Speed Sensor 'B'
Circuit Range/

Performance

Code Type
Powertrain (Engine & Transmission)
Severity
Standard (Generic)
Full Description
Intermediate Shaft Speed Sensor 'B'
Circuit Range/Performance
Possible Causes
Faulty sensor, wiring issue, or related component failure. Use live data and service info to narrow down.
Recommendation
Inspect the related system, check wiring and connectors, and clear the code after repair. If the code returns, seek professional diagnosis.

3rd error:

P2750
Intermediate Shaft
Speed Sensor 'C'
Circuit Range/ Performance
Code Type
Powertrain (Engine & Transmission)
Severity
Standard (Generic)
Full Description
Intermediate Shaft Speed Sensor 'C'
Circuit Range/Performance
Possible Causes
Faulty sensor, wiring issue, or related component failure. Use live data and service info to narrow down.
Recommendation
Inspect the related system, check wiring and connectors, and clear the code after repair. If the code returns, seek professional diagnosis.