BMW 1999-2005 M3, Service Manual

Page: 111 / 1258

BMW
code P-code Fault type and
function Signal type and
range Explanation
222 P0125 Insufficient coolant
temp. to permit
closed loop
operation Input analog
(0-5V) Comparison of actual coolant
temperature against
calculated DME value which
varies with load signal.
223 P1180 Oxygen sensor
post-cat (Bank 1),
switching time slow Input analog (high
is lean) (0-5V) Checks amount of time
oxygen sensor takes to switch
from rich to lean and vice
versa. If too long, fault will
set.
224 P1181 Oxygen sensor
post-cat (Bank 2),
switching time slow Input analog (high
is lean) (0-5V) Checks amount of time
oxygen sensor takes to switch
from rich to lean and vice
versa. If too long, fault will
set.
225 P1192 Post-cat sensor
(Bank 1); trim
control Input analog
(0-5V) Rationality check for O2
control adaptation with post
catalyst sensor bank 1.
226 P0193 Post-cat sensor
(Bank 2); trim
control Input analog
(0-5V) Rationality check for O2
control adaptation with post
catalyst sensor bank 2.
227 P0188 Fuel trim (Bank 1),
O2 control
adaptation limit DME internal
values logical Range control of adaptation
values.
228 P0189 Fuel trim (Bank 2),
O2 control
adaptation limit DME internal
values logical Range control of adaptation
values.
229 P0133 Oxygen sensor
pre-cat (Bank 1,
slow response time Input analog (high
is lean) (0-5V) Checks amount of time
oxygen sensor takes to switch
from rich to lean and vice
versa. If too long, fault will
set.
230 P0153 Oxygen sensor
pre-cat (Bank 2),
slow response time Input analog (high
is lean) (0-5V) Checks amount of time
oxygen sensor stays in its rich
or lean state. If it remains
there too long in either fault
will set.
231 P1178 Oxygen sensor
pre-cat (Bank 1),
switch time too
slow Input analog (high
is lean) (0-5V) Checks amount of time
oxygen sensor takes to switch
from rich to lean and vice
versa. If it takes too long to
On-Board Diagnostics http://ebahn.bentleypublishers.com/BMW/3/E46/Repair%20Manuals/8...
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