BMW 5251 Service Manual page 968

OBD-8
I
On-Board Diagnostics
DTC
digit interpretation
1st digit
P
powertrain
B
body
C chassis
2nd digit
0 SAE
1
BMW
3rd digit
0
1
2
3
4
5
6
7
4th
-
5th digits
total system
airlfuei induction
fuel injection
ignition system or misfire
auxiliary emission control
vehicle speed
&
idle control
ECM inputs/outputs
transmission
individual circuits or
components
DTC
example: P 0 3 0 6
P: A powertrain problem
0:
SAE sanctioned or 'generic'
a
3: Related to an ignition system / misfire
06 Misfire detected at cylinder #6
DTCs provide a freeze frame or snap-shot of a vehicle
performance or emissions fault at the moment that the fault
first occurs. This information is accessible through generic
OED I1 scan tools.
Freeze frame data contains, but is not limited to, the following
information:
Engine load (calculated)
Engine rpm
Short and long term fuel trim
Vehicle speed
Coolant temperature
Intake manifold pressure
Open/closed loop operation
Fuel pressure (if available)
DTC