Les dejo el autoscan que realicé del auto, el mismo pierde un poco de aceite y también algo de liquido refrigerante (que no veo la perdida pero si baja el nivel)
Aun no borré ningun error ni volví a hacer el scaneo, dejo esto quizá alguno sepa interpretar que sucede, cualquier aporte será bienvenido!

VCDS Version: Release 12.12.0
Data version: 20130910

Tuesday,01,October,2013,19:11:40:40973

Chassis Type: 1J - VW Golf/Bora IV (1998 > 2006)
Scan: 01 02 03 08 15 16 17 19 22 29 35 36 37 39 46 47 55 56 57 75
76

-------------------------------------------------------------------------------
Address 01: Engine Labels: 038-906-012-AGR.lbl
Part No: 038 906 012 K
Component: 1,9l R4 EDC 0000SG 2811
Coding: 00002
Shop #: WSC 00000
VCID: 183F2EE27833A6DE4C3-4B36

2 Faults Found:
17552 - Mass Air Flow Sensor (G70)
P1144 - 35-10 - Open or Short to Ground - Intermittent
17664 - Engine Coolant Temp Sensor (G62)
P1256 - 35-10 - Open or Short to Plus - Intermittent
Readiness: N/A

-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 1C0-907-37x-ABS.lbl
Part No: 1C0 907 379 L
Component: ABS FRONT MK60 0101
Coding: 0004097
Shop #: WSC 00000 785 00200
VCID: 3365F94E51956586591-517A

1 Fault Found:
00668 - Supply Voltage Terminal 30
008 - Implausible Signal - Intermittent

-------------------------------------------------------------------------------
Address 15: Airbags Labels: 6Q0-909-605-VW5.lbl
Part No: 1C0 909 601
Component: 1P AIRBAG VW51 0008
Coding: 12624
Shop #: WSC 00000
VCID: DDB1FFF6579103F65F5-517A

1 Fault Found:
00532 - Supply Voltage B+
07-10 - Signal too Low - Intermittent

-------------------------------------------------------------------------------
Address 01: Engine Labels: 038-906-012-AGR.lbl
Part No: 038 906 012 K
Component: 1,9l R4 EDC 0000SG 2811
Coding: 00002
Shop #: WSC 00000
VCID: 183F2EE27833A6DE4C3-4B36

2 Faults Found:
17552 - Mass Air Flow Sensor (G70)
P1144 - 35-10 - Open or Short to Ground - Intermittent
17664 - Engine Coolant Temp Sensor (G62)
P1256 - 35-10 - Open or Short to Plus - Intermittent
Readiness: N/A

-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 1C0-907-37x-ABS.lbl
Part No: 1C0 907 379 L
Component: ABS FRONT MK60 0101
Coding: 0004097
Shop #: WSC 00000 785 00200
VCID: 3365F94E51956586591-5198

1 Fault Found:
00668 - Supply Voltage Terminal 30
008 - Implausible Signal - Intermittent

-------------------------------------------------------------------------------
Address 15: Airbags Labels: 6Q0-909-605-VW5.lbl
Part No: 1C0 909 601
Component: 1P AIRBAG VW51 0008
Coding: 12624
Shop #: WSC 00000
VCID: DDB1FFF6579103F65F5-515E

1 Fault Found:
00532 - Supply Voltage B+
07-10 - Signal too Low - Intermittent

-------------------------------------------------------------------------------
Address 01: Engine Labels: 038-906-012-AGR.lbl
Part No: 038 906 012 K
Component: 1,9l R4 EDC 0000SG 2811
Coding: 00002
Shop #: WSC 00000
VCID: 183F2EE27833A6DE4C3-4B36

2 Faults Found:
17552 - Mass Air Flow Sensor (G70)
P1144 - 35-10 - Open or Short to Ground - Intermittent
17664 - Engine Coolant Temp Sensor (G62)
P1256 - 35-10 - Open or Short to Plus - Intermittent
Readiness: N/A