reset AUDI A4 2000 B5 / 1.G AFC Engine On Board Diagnostic Multiport Fuel Injection User Guide

01-256

Readiness code, reading and generating


Note:
OBD II legal regulations require a display
(readiness code) that shows inspection
readiness for the annual exhaust emissions test.
The readiness code shows that every component
and/or system that affects exhaust emissions,
which can lead to the MIL switching on, has been
operated at least once with positive results.

Note:
The readiness code is reset and/or erased every
time:

DTC memory is erased (either with display
group 01 function 05 or display group 33 mode
4)
ECM harness connector is disconnected from
ECM -J192- (e.g. connecting test box VAG
1598/19, replacing ECM, etc.)
Battery is disconnected
Pa
ge 355 of 366 On Board Dia
gnostic
(OBD
) - Multi
port Fuel In
jection
(MFI
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1

01-258

Generating readiness code

Notes:

In order to generate the readiness code, a
"mixed city and highway" drive (short test) has
to be taken. A "mixed city and highway" drive is
understood as approx. 1-1/2 to 5 minutes at 80-
100 km/h (50-63 mph) with manual
transmission in 4th or 5th gear, or automatic
transmission selector lever in "D" position,
preferably in 4th gear.
If a malfunction is recognized and stored by the
engine control module during a "mixed city and
highway" trip, and/or the Malfunction Indicator
Lamp (MIL) is switched on, the brief test can be
interrupted by the technician and the
malfunction repaired according to the diagnostic
trouble code.
If the readiness code has to be generated, the
DTC memory should be checked (no faults
should be stored) and erased (readiness code
will be reset) before taking the "mixed city and
highway" trip.
Pa
ge 357 of 366 On Board Dia
gnostic
(OBD
) - Multi
port Fuel In
jection
(MFI
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1