length AUDI A4 1999 B5 / 1.G AFC Engine On Board Diagnostic Multiport Fuel Injection Workshop Manual

The malfunction "P0136 / 16520" is set, 123 sec after engine start, as soon as the signal voltage during a deceleration fuel
shut off is greater than 300 mV at a coolant temperature over 80 C (176 F) and 45 sec behind the probe heating after the
Three Way Catalytic Converter (TWC) is switched on. The length of the deceleration fuel shut off must be longer than 4 sec.
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11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
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after the probe heater behind the Three Way Catalytic Converter (TWC) is switched on , as soon as the signal voltage during
a deceleration fuel shut off is greater than 300 mV. The length of the deceleration fuel shut off must be longer than 4 sec.
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gnostic
(OBD
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jection
(MFI
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p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1

01-225
Display group 037 (Sensor wheel learning value)
Notes:

In order to be able to monitor and/or record combustion misfiring, a sensor wheel is necessary. The flywheel (starter ring
gear) is used as the sensor wheel. The flywheel is checked for mechanical damage after each start, i.e. specified
tolerances must not be exceeded.
Small malfunctions in the flywheel (e.g. teeth worn) are compensated by learning values. If greater damage is recognized,
the malfunction "engine speed sensor wheel tooth error recognized" is stored in the DTC memory.
The sensor wheel is tested during a deceleration fuel shut-off in the engine speed range from 2200 -4000 RPM. In order to
get a result, the length of the deceleration fuel shut off must be approx. 10 sec.
Display shows
Display specified value
Designation/diagnosis
Basic setting 37
1 2 3 4 X X 1 = Sensor wheel condition and/or result
______ 2 = ________________________
______ 3 = ________________________
______ 4 = ________________________
Pa
ge 319 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