VCDS

VAGCOM Block Cheat Sheet

Basics

1	coolant temp	o2 sens bank1	o2 bank2
2	load	injection time	maf
3	maf	throttle angle	timing

Boost

113	load	throttle drive	atmos pressure
115	load	spec'd boost	actual boost
118	iat	boost duty cycle	actual boost

Timing

20: timing correction	1	2	3	4
21: timing correction	5	6
22	load	ign angl corr 1	ign angl corr 2
23	load	ign angl corr 3	ign angl corr 4
24	load	ign angl corr 5	ign angl corr 6
26: knock sensor voltage	1	2	3	4
27: knock sensor voltage	5	6

O2 sensors

30: o2s	ctrl op
31: o2s v pre(s1)/post(s2)	b1s1	b1s2	b2s1	b2s2
32: o2s LTFT (s1)	idle b1	part b1	idle b2	part b2
33: o2s pre cat (s1)	b1 ctrl	b1 v	b2 ctrl	b2 v
34: o2s aging post(s2) b1	rpm	egt	time period	status
35: o2s aging post(s2) b2	rpm	egt	time period	status
36: o2s post(s2)	b1 v supply	b1 status	b2 v supply	b2 status
37: o2s bank1	load	volt s2	corr val s1-s2	status
38: o2s bank2	load	volt s2	corr val s1-s2	status
43: o2s aging pre(s1) b1	rpm	egt	time period	status
44: o2s aging pre(s1) b2	rpm	egt	time period	status

General

4	batt voltage	coolant temp	iat
5	load	speed	Op condition-idl/prt/fl/dcl/erch
6	load	iat	alt cor fact
10	load	throttle drive	ignition time
11	coolant temp	iat	ignition time

Misfires

14	load	misfire count	misfire status
15: misfires	1	2	3	status
16: misfires	4	5	6	status
18: misfires	lowest+speed@	highest+speed@	lowest+load@	higehst+load@

Throttle

60: throt	vcm adapt
61: throt	volt	throt drive	op condition
62: throt	sens 1	sens 2	pos	sender 2
63: throt	pos	duty cycle

Secondary air injection system

77: bank 1	air mass	rel air mas	diag
78: bank 2	air mass	rel air mas	diag

Catalytic convertors

46	cat b1
47	cat b2

Misc

50	spec'd eng spd	ac idle boost	ac compressor on/off
54	op condition	throt pos	throt drive
55	idle
56	idle
66	cruise
70	evap
71	fuel tank