BMW 3 (E46). Manual — part 24
BMW
code
P-code
Fault type and
function
Signal type and
range
Explanation
45
Multi functional
steering wheel,
toggle-bit
Input binary
stream (0-12V)
Every 0.5 sec. a message that
includes a toggle bit (toggles
between 0->1 and 1->0) is
transmitted. Change bit is
monitored to indicate proper
function.
47
MS 43
Torque monitoring
level 1
DME internal
values logical
48
MS 43
Internal control
module
DME HW test
memory
49
ECU internal test
DME HW test
50
P1145
MS 42
Running losses
valve (3/2), final
stage
Output digital
on/off (active low)
DME final stage will set flag
whenever a short to ground, a
short to battery voltage or a
disconnection between output
transistor and component
exists.
MS 43
ECU internal test
DME HW test
51
MS 43
ECU internal test
DME HW test
52
Rear exhaust valve
flap
Output digital
steady (active low)
DME final stage will set flag
whenever a short to ground, a
short to battery voltage or a
disconnection between output
transistor and component
exists.
53
P1509
Idle control valve
opening coil
Output digital
pulse width (active
low)
DME final stage will set flag
whenever a short to ground, a
short to battery voltage or a
disconnection between output
transistor and component
exists.
55
P0155
Oxygen sensor
heater pre-cat
(Bank 2)
Output digital
pulse width (active
low)
DME final stage will set flag
whenever a short to ground, a
short to battery voltage or a
disconnection between output
transistor and component
exists.
56
Ignition feedback,
interruption at
Input analog (32V)
Check for correct signal
voltage. If voltage is 32V
BMW
code
P-code
Fault type and
function
Signal type and
range
Explanation
shunt resistor
(limitation voltage) then
secondary ignition voltage is
detected and shunt resistor
may be faulty.
57
P0325
Knock sensor 1
circuit, (Bank 1)
circuit continuity
Input analog
amplitude
(13-19kHz)
Plausibility check between
knock sensor amplitude
during knocking with internal
knock detection mapped DME
values.
59
P0330
Knock sensor 2
circuit, (Bank 2)
circuit continuity
Input analog
amplitude
(13-19kHz)
Plausibility check between
knock sensor amplitude
during knocking with internal
knock detection mapped DME
values.
61
P0141
Oxygen sensor
heater post-cat
(Bank 2)
Output digital
pulse width (active
low)
DME final stage will set flag
whenever a short to ground, a
short to battery voltage or a
disconnection between output
transistor and component
exists.
62
P0412
Secondary air
injection system
switching valve
Output digital
on/off (active low)
DME final stage will set flag
whenever a short to ground, a
short to battery voltage or a
disconnection between output
transistor and component
exists.
65
P0340
Intake cam position
sensor,
malfunction
Input analog
phase shift 0-5V
DME final stage will set flag
whenever a short to ground, a
short to battery voltage or a
disconnection between output
transistor and component
exists.
68
EVAP system,
purge control valve
circuit
Output digital
pulse width (active
low)
DME final stage will set flag
whenever a short to ground, a
short to battery voltage or a
disconnection between output
transistor and component
exists.
69
Relay fuel pump
Output digital
on/off (active low)
DME final stage will set flag
whenever a short to ground, a
short to battery voltage or a
disconnection between output
BMW
code
P-code
Fault type and
function
Signal type and
range
Explanation
transistor and component
exists.
74
AC compressor
relay
Output digital
on/off (active low)
DME final stage will set flag
whenever a short to ground, a
short to battery voltage or a
disconnection between output
transistor and component
exists.
79
P0161
Oxygen sensor
heater post-cat
(Bank 1)
Output digital
pulse width (active
low)
DME final stage will set flag
whenever a short to ground, a
short to battery voltage or a
disconnection between output
transistor and component
exists.
83
P0335
Crankshaft position
sensor,
malfunction
Input digital
(0-12V)
Checks for correct signal
pattern and correct number of
expected flywheel teeth.
100
P0601
Internal control
module, memory
check sum or
communication
DME internal
values logical
Internal hardware test of
RAM, ROM, and Flash Prom.
103
P1519
VANOS faulty
reference value
intake
DME internal
values logical
Maximum VANOS adjustment
angle, checked at every
engine start must be within a
specified limit.
104
P1520
VANOS faulty
reference value
exhaust
DME internal
values logical
Maximum VANOS adjustment
angle, checked at every
engine start must be within a
specified limit.
105
P1522
VANOS stuck
(Bank 1) intake
DME internal
values
Monitoring of a desired
VANOS adjustment within a
predefined diagnostic time
limit.
106
P1523
VANOS stuck
(Bank 2) exhaust
DME internal
values
Monitoring of a desired
VANOS adjustment within a
predefined diagnostic time
limit.
109
P1580
Motor throttle valve
pulse width not
plausible
Output digital
pulse width
(0-12V)
Throttle position control
algorithm checks for problems
with mechanical coupling
BMW
code
P-code
Fault type and
function
Signal type and
range
Explanation
spring within motor throttle
body.
110
P1542
Pedal sensor
potentiometer 1
Input analog
(0-5V)
Failed signal range check
against predefined diagnostic
limits.
111
P1542
Pedal Sensor
Potentiometer 2
Input analog
(0-5V)
Failed signal range check
against predefined diagnostic
limits.
112
P0120
MS 42
Motor throttle valve
potentiometer 1
Input analog
(0-5V)
Failed signal range check
against predefined diagnostic
limits.
MS 43
Throttle position
sensor 1
Input analog
(0-5V)
Failed signal range check
against predefined diagnostic
limits.
113
P0120
Motor throttle valve
potentiometer 2
Input analog
(0-5V)
Failed signal range check
against predefined diagnostic
limits.
114
P1580
MS 42
Motor throttle valve
final stage
DME internal test
Final stage inside DME
(special H-bridge), will set
internal flag whenever a short
to ground, a short to battery
voltage or a disconnection
occurs.
MS 43
A second pedal
sensor range
check failure is
determined
DME internal
values logical
If pedal sensor malfunction is
determined, followed by a
second malfunction, a signal
is sent.
115
P1623
MS 42
Output voltage 5V
for potentiometer
operation 1
DME internal (5V)
Check for proper 5 volts
supply to potentiometers is
possible within a predefined
voltage limit.
MS 43
Range check for
throttle position
adaptation
Input analog
(0-5V)
Range check for closed
position of throttle sensors.
116
P1623
Output voltage for
potentiometer
operation 2
DME internal (5V)
Check for proper 5 volts
supply to potentiometers is
possible within a predefined
voltage limit.
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