I am no good at screen shots Keith, if i find time will disconnect MAF and try it again. Also will disconnect mod valve and try and see if that brings anything up. There are no codes listed on Nanocom for EGR diag. Having EGR disconnected is of no consequence to anything other than emissions. Which the ECU does not measure anyway. Later more complexed EGR variants certainly measure operation but the system on the M51 doesn't. Can see the ECU knowing that something is disconnected but that is as far as it goes i think. It certainly doesn't put the engine in limp mode as suggested by our friend. Think we both know that much.
Datatek
Well-Known Member
I must do the latest updates on my Faultmate, I know the car runs fine with the MAF disconnected apart from a small increase in fuel consumption, certainly no limp mode.
Ok Nanocom with engine at idle MAF disconnected. Air flow fault, current logged. Mass airflow value invalid "To low". No fault code. With modulation valve disconnected no fault. With vac pipe disconnected no fault.
Datatek
Well-Known Member
Annoying that faultmate does not give that info. But it does sort of confirm that there is no fault condition with it unplugged.Ok Nanocom with engine at idle MAF disconnected. Air flow fault, current logged. Mass airflow value invalid "To low". No fault code. With modulation valve disconnected no fault. With vac pipe disconnected no fault.
Datatek
Well-Known Member
I guess it would depend on the failure mode.Yes indeed and that maybe the fault you would get if it failed.
I think when you disconnect the vacuum hose, you get an error. I had to test it. but when you disconnect the maf, there is direct a fault code. I remeber from the earlier, that when egr is not working you get an error after hundreds of km (because diificult the check for the dde software.
To check what i say, i go to try it. i let you know.
by the way i found an m51 selfdiag faultlist. longer then the one listed by blackbox... I did not check this list is it is correct, but there are more faultcodes ( except my 33 haha)
01 Delivery Controller Deviation
03 Shut off Valve
04 Glow Plug Indicator Lamp)
05 Needle Motion Sensor
06 Exhaust Gas Recirculation Deviation
07 Exhaust Gas Recirculation
08 Glow Plug Timing Control
09 DDE Error
10 Injection Phasing Control Deviation
11 DDE Error
15 DDE Power Supply -Main Relay
16 Voltage Supply B+
20 Cruise Control Operation
21 DDE Error
23 AirCon Signal
25 Pedal Position Sensor
26 Brake Light Switch or Brake Light Test Switch
28 Auto Gearbox Selector Switch
29 Vehicle Speed Signal
30 EGR Switch
31 Brake Light Test Switch
32 Multifunction Steering Wheel Cruise Control
35 Fuel Temperature Sensor
36 Oil Temperature Sensor
37 Pedal Position Sensor
38 Air Flow Meter HFM
42 ADS
44 AirCon Switch
45 DWA Signal
46 DDE Error
47 RPM Sensor
49 Signal to Instrument Cluster
52 Intake Air Temperature Sensor
53 Coolant Temperature Sensor
54 Boost Pressure Sensor
56 Injection Pump Position Sensor
58 Injection Quantity
59 Boost Pressure Control
60 DDE Power Supply
63 Cruise Control Adjustment
64 DDE Error
66 Fuel Supply
67 Air Supply Deviation
100 Cruise Control Adjustment Fault
101 Boost Pressure Control Deviation
102 DDE Error
103 DDE Error
104 DDE Error
105 DDE Error
106 DDE Output Stage
108 Variant Coding
109 Variant Coding
110 AirCon Poor Operation
111 EEPROM checksum Injection Pump Adaptation
112 CAN Error - EGS Control Unit
113 CAN Error - ASC Control Unit
114 CAN Error - Instrument Cluster
To check what i say, i go to try it. i let you know.
by the way i found an m51 selfdiag faultlist. longer then the one listed by blackbox... I did not check this list is it is correct, but there are more faultcodes ( except my 33 haha)
01 Delivery Controller Deviation
03 Shut off Valve
04 Glow Plug Indicator Lamp)
05 Needle Motion Sensor
06 Exhaust Gas Recirculation Deviation
07 Exhaust Gas Recirculation
08 Glow Plug Timing Control
09 DDE Error
10 Injection Phasing Control Deviation
11 DDE Error
15 DDE Power Supply -Main Relay
16 Voltage Supply B+
20 Cruise Control Operation
21 DDE Error
23 AirCon Signal
25 Pedal Position Sensor
26 Brake Light Switch or Brake Light Test Switch
28 Auto Gearbox Selector Switch
29 Vehicle Speed Signal
30 EGR Switch
31 Brake Light Test Switch
32 Multifunction Steering Wheel Cruise Control
35 Fuel Temperature Sensor
36 Oil Temperature Sensor
37 Pedal Position Sensor
38 Air Flow Meter HFM
42 ADS
44 AirCon Switch
45 DWA Signal
46 DDE Error
47 RPM Sensor
49 Signal to Instrument Cluster
52 Intake Air Temperature Sensor
53 Coolant Temperature Sensor
54 Boost Pressure Sensor
56 Injection Pump Position Sensor
58 Injection Quantity
59 Boost Pressure Control
60 DDE Power Supply
63 Cruise Control Adjustment
64 DDE Error
66 Fuel Supply
67 Air Supply Deviation
100 Cruise Control Adjustment Fault
101 Boost Pressure Control Deviation
102 DDE Error
103 DDE Error
104 DDE Error
105 DDE Error
106 DDE Output Stage
108 Variant Coding
109 Variant Coding
110 AirCon Poor Operation
111 EEPROM checksum Injection Pump Adaptation
112 CAN Error - EGS Control Unit
113 CAN Error - ASC Control Unit
114 CAN Error - Instrument Cluster
Read my post #64, there is no error with vac hose disconnected. There is no error when mod valve is disconnected. There is a low air flow error when MAF is disconnected. There is no code 33 for the M51 diesel. With the three levels of control DDE 2, DDE 2.1 or DDE 2.2. Of course you found a longer list but it's not for your ECU is it?
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it is a longer list. they say it is m51.... i do not know if the list is correct. but longet then the faultmate list.
but still wondering i have 33. by the way the car is 100% Original. latest diesel version. New delivered in Belgium. the only mod is closed egr valve
i go to re-open egr and will see what happens.... now after reset and some hudreds miles 33 is coming still in. let you know if something change
but still wondering i have 33. by the way the car is 100% Original. latest diesel version. New delivered in Belgium. the only mod is closed egr valve
i go to re-open egr and will see what happens.... now after reset and some hudreds miles 33 is coming still in. let you know if something change
Datatek
Well-Known Member
That long list is most likely M57, CAN bus is the big givaway, there is no CAN bus on the P38/M51 diesel.
Wish you would listen, there are several version of DDE (EDC) used on the M51 engine, NONE of them have a fault code 33. And the latest one that you posted a list for is NOT used on the P38. Have you ever wondered why BMW injection pump electrics don't work on a P38? There is NO CODE 33 on the pumps used by BMW nor the pumps used by Land rover.
Datatek
Well-Known Member
I now wonder if he is even looking at a P38When will this bloke start listen?
Bladerunner919
Active Member
I think the M51 was used in CANbus BMW models, E38 7 series for example, which is where I suspect the long list came from. OP doesn't seem to realise that the implementation of the engine in the P38 is different to that in the BMW.
Datatek
Well-Known Member
That would be a totally different EDC then.
I still think the list is M57 as it has things like boost control that don't exist on the M51.Bladerunner919
Active Member
Look at post 15 in this thread:
BMW fault codes and their meaning. BMW Fault codes list. - Page 2
It's the BMW fault codes for the M51 in a 3, 5 and 7 series BMW. It's the list that the OP posted a page or so back.
BMW fault codes and their meaning. BMW Fault codes list. - Page 2
It's the BMW fault codes for the M51 in a 3, 5 and 7 series BMW. It's the list that the OP posted a page or so back.
Datatek
Well-Known Member
It's the M51tu, sounds quite different to the M51 used in the P38, Omega and earlier 325, 525 diesels, much more sophisticated. Not an engine I have any knowledge of
That would be a totally different EDC then.
The M51tu has a list of fault codes longer than an MPs expenses list. Not used on the P38 though i don't think. There are several versions of BMW DDE starting at 1 and as far as i can find going to DDE 2.2. It would be interesting to find out which version is used on the P38, but that info i cannot find up to present. But it would seem from my searches that only DDE 2 and DDE 2.1 were used on the M51. But don't quote me on that.
Datatek
Well-Known Member
DDE goes at least to 3. I'm certain that the M51tu was never used on any version of the P38.
