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Error codes are 5 characters.

VAG Error Code: 00725

Fault Location:
Footwell Vent Switch: Right Rear (F186)

Possible Cause:
Wiring/Connector(s).
Footwell Vent Switch: Right Rear (F186).

VAG Error Code: 01850

Fault Location:
Temperature Sensor for Heated Seat: Right Rear (G95) - Open Circuit or Short Circuit to Positive

Possible Cause:
Wiring/Connector(s).
Fuse(s).
Temperature Sensor for Heated Seat: Right Rear (G95).

VAG Error Code: 00103

Fault Location:
Interior Locking Button: Right Rear (E311) - Electrical Fault in Circuit

Possible Cause:
Wiring/Connector(s).
Interior Locking Button: Right Rear (E311).

Possible Solutions:
Check/Replace all faulty Wiring/Connector(s).
Read Measuring Value Blocks (MVB).

VAG Error Code: 00137

Fault Location:
Left Rear Wheel Acceleration Sensor (G339) - Electrical Fault in Circuit

Possible Cause:
Wiring/Connector(s).
Left Rear Wheel Acceleration Sensor (G339).

Possible Solutions:
Check/Replace all faulty Wiring/Connector(s).
Read Measuring Value Blocks (MVB).

VAG Error Code: 00300

Fault Location:
Transmission Fluid Temperature (TFT) Sensor (G93) - Short
Circuit/Malfunctioning/Implausible Signal

Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.
Transmission Not Shifting Properly or in Limp Mode.

Wiring/Connectors from/to Transmission Fluid Temperature Sensor (G93).
Transmission Fluid Temperature Sensor (G93) faulty.

Possible Solutions:
Check Wiring/Connectors from/to Transmission Fluid Temperature Sensor (G93).
Check Voltage Supply for Transmission Fluid Temperature Sensor (G93).
Read Measuring Value Blocks (MVB) for Transmission Fluid Temperature Sensor (G93) readings.
Check/Replace Transmission Fluid Temperature Sensor (G93).

VAG Error Code: 00302

Fault Location:
Anti-Lock Brake System (ABS) Solenoid Valve Relay (J106) (inside ABS Control Module (J104) - Open Circuit or Resistance too High - Intermittent

Possible Cause:
Wiring/Connector(s).
Open circuit or resistance too high between earth of ABS Solenoid Valve Relay (N106) (terminal 85) and ABS Control Module (J104) (terminal 87).
Open circuit or resistance too high between voltage supply of ABS Solenoid Valve Relay (N106) (terminal 86) and ABS Control Module (J104) (terminal 2).
Short circuit to B+ or earth in one of the activation wires.
Incorrect control module.
Voltage supply too low for ABS Solenoid Valve Relay (N106) (terminal 30).
ABS Solenoid Valve Relay (N106) or ABS Hydraulic Unit (V55) malfunctioning.

VAG Error Code: 00303

Fault Location:
Board Computer Function Selector Switch (E91)

Possible Cause:
Unknown Symptom, Cause or Solution.

VAG Error Code: 00304

Fault Location:
Control Circuit Regulator for Fresh Air Blower

Possible Cause:
Unknown Symptom, Cause or Solution.

VAG Error Code: 01780

Fault Location:
Sensor for Vehicle Levelling - Mechanical Malfunction - Intermittent

Possible Cause:
Wiring/Connector(s).

As taken from my https://volkswagenforum.com/forum/ge...oftware-34973/