DIAG Test Codes on dash display
 

Car goes in for it's first Inspection 2, brake fluid and coolant changes at UK BMW dealer tomorrow.

Within the last couple of days the "ENGINE" WARNING LAMP has illuminated despite me being on yellow service lamp only, (red not displayed yet). Manual states this indicates deterioration of exhaust emisison control values requiring examination by dealer. Don't know if it's a faulty sensor ( o2- MAF ???) No doubt your diagnostic test within the Insp 2 will explain matters. I do not currently have and OBDII scanner/reader and haven't had chance to pull any codes but the car drives ok with no recent changes to acceptable combined mpg of 20.4 (official govt fig = 20.3).

Now the intersting bit for which I would appreciate any knowedgable comments. I know how to access and unlock all the dash displayed test info having read how to do it on here and elsewhere. ( Held in right hand push button under main clocks then used left knob to getr to Test 14 which I had unlocked by adding up all individual numbers in VIN and using this as unlock code). Access of Test NR-14 displayed the following results :

DIAG 1 BF 88005
DIAG 2 8D 90000
DIAG 3 3F 88000
DIAG 4 90 84000
DIAG 5 C7 81000

These codes mean nothing to me & I believe they are not recognised generic OBDII codes, (they don't start with a P for powertrain). I am not daft and have not and would not reset anything!

Just wonderd if anyone had a list of these dash displayed codes and source where they can be cross referenced to official OBDII codes.

If the car stays, (hopefully), in my hands for a while I may later purchase a suitable gizzmo to pull the codes via OBD socket. I just thought it would be excellent if by some chance someone knew how to decipher "DIAG code readings" in test 14. Dealer seemed to have no idea what the codes or info meant.

BTW I have my own copy of info from http://www.ideaphile.com/bmw/540-obc.html but no real info re deciphering Test 14 info.

Update- dealer stated only historic fault code relating to car found was o2 sensor but the fault has cleared. I reckon this may have been down to me not tightening fuel cap properly a week or so ago - a known cause of this light activating according to what I have read on here. Here's hoping.

I would still be interested if any BMW techs or X5 tech gurus can explain the DIAG figures/data in test 14 in detail...........................Comments anyone ?

Bump - I don't have any fault codes now but would still be really interested if anyone is able to clarify this matter.

Does anyone know how to interpret or translate these codes which obviously mean something and appear to be info re diagnostic faults ?

edited bump

Update !

Okay guys I believe these are BMW HEX codes.


Does anyone agree or disagree ?



“WARNING IF YOU ACCESS OR TRY TO ACCESS ANY OF THE HIDDEN 21 TESTS YOU MAY CAUSE A CHAIN OF EVENTS THAT MAY RESULT IN COSTLY DAMAGE OR EVEN EXPENSIVE SYSTEM OR CAR FAILURE ”

I can't believe that nobody on here knows more than me. Is there anybody out there ?

I seem to be talking to myself here but some searching caused me to find this link http://www.bmwmotorsports.org/BMW_docs/OBDproc.pdf

This seems to be a definitive list of hex codes for various OBD2 complaint BMW engines including 4.4i M62.

Go to Page 16 of link for pdf charts and decimalised index

Column 5 heading is marked fcdec (fault code decimal ?) and hex.

The fcdec is a sequential number index starting at 1.

Below the fcdec is the heading hex which I believe to be the hex code.


All the readings I had displayed ended 000 except DIAG1 which ended 005.

All the codes in the listed in the pdf are 2 character/figure length.

I am guessing that 00 means NO Faults Present, (dealer only found one code and that was for precat bank 2 o2 sensor).

I cannot ascertain what the earlier letters and numbers mean but would guess these are probably providing relevant specific "cycle" or time/scan info from OBD2.

Hex Code 05 on M62 (columb M62 is checked on pdf) relates to " precat o2 sensor" as diagnosed by dealer.

The 05 data at end of my DIAG1 is the only numerical code reading for last 3 varaibales and threfore only fault code code displayed if I ignore those ending 000.

I am now threfore of the belief that test NR14 can be used to find hex and that using this list means I can refer it to a specific fault/component on my car.

The chart on the link also indicates how many cycles are required before the check engine "MIL" lamp will automatically go out after problem rectified or new component fitted. These vary depending on componet effected.


Hope this helps someone - if anyone knows more feel free to post your views.

Did someone hear something?

:thebird: :nanana: :rofl: ;)

Think I read somewhere that these hex numbers were indicating oil or coolant temperatures.

As a result of all my hours researching this and based on the evidence I have posted with link I am not convinced on this but I will happily revisit my findings if you have anything authoratative to substantiate this.

Thanks in any case

I had my X5 diagnosed today by the dealer as I had a message "SELFLEVEL. SUSP INACT." continuously.
Prior giving my car for inspection, I ran a TEST NR.14 to see what error codes were present. I had two:
DIAG 1 C7 81000
DIAG 2 BD 90038

Now here is what the diagnostic report says:

Having that report in hand, I did extra search for "Tank Sensor 1" and found this:
http://www.bba-reman.com/content.asp...s_and_problems

As per the "SELFLEVEL. SUSP INACT." message, it is clearly because of the faulty ride-level sensor on the rear left. I assume the BD 90038 code comes from there as the braking-force distribution might be linked to suspension.

I don't know what the MRS4 Battery, positive termination error code means but I could figure out the positive cable (directly on battery) has several wires. 2 big red wires and 2 small black wires in one single isulation tube. These wires go along the trunk (left side) to the end of the trunk, just beneath the rear seats. I t just ends there... any help?

Finally, the other codes "LCM" where raised some days ago when I did a full bulbs check/cleanup. It just remains in computer memory. "Big brother is watching you..."

Jeremy

Sorry to undermine all your timely effort but as far as I can ascertain the DIAG data in Test NR.14 only relate to emissions related codes assocaited with the SES light.

DIAG 1 C7 81000 : The thing to do is to ignore the 81 as this i believe the first numbers relate merely to cycle references as to when the car tested itself - IMHO here there are no faults here- the last 2 numbers are 00


DIAG 2 BD 90038 : Using the PDF on my link and cross referencing M62 engine data Hex code 38 relates to a cylinder 7 misfire. This is likely to be a one off ( as the code is not repeated) but may point towards other things. If car running fine and No SES light on then dont even worry about it- just bear in mind..........if it keeps throwing the code the SES light may activate then yu can run another test on NR.14


Sorry but the other codes mean nothing to me and I am assuming they relate to BMW systems in workshops & not Test NR14 data. I dont have info to be able to give any conclusive interpretation of this data.

Found aditional info there:
http://www.bmwmotorsports.org/BMW_do...1driverino.pdf

At least we agree on that one: it is hexadecimal ;)

But I don't agree on that one :
It would be more than a coincidence of having 2 fault codes in TEST NR. 14 and two "INSTRUMENT" fault in the diagnosis report starting with the same hexadecimal code:

DIAG 1 C7 81000 : INSTRUMENT - C7 Tank Sensor 1 (fuel-pump side)
DIAG 2 BD 90038 : INSTRUMENT - BD Electronic braking-force distribution - Instrument cluster (IKE High) kom

I interpret the "IKE High" above as oposite to "Base" Instrument Cluster. I do have the high one with 20 digit readout

jmagne - Interesting - re C7 and BD albeit confusing - I will keep an open mind (see footnote)

Thinking a full list of hex codes would be useful I found this link to peake research which shows manual content in PDF for their readers which read hex

http://www.peakeresearch.com/manual.htm

Page 6 or right of 3/22 on pdf, (for tool R5 SCX3), shows list of tables for cars up to 1999 in that it tells owners which table to use for their car and is clear as to which table relates to which car. For cars after 1996 it suggests owners should look at page 10 but the formattting seems out and I cant seem to view an index link with specific models - frustratingly this means I dont know which table to use for my 12/01 build 4.4, however, by a process of elimination I can only find one hex value 05 which relates to pre car 02 sensor and sits in a table which relates to an 8 cylinder car. I know that 05 is last 2 digits as per code BF88005 that I had when I prior had the precat bank 2 lambda/02 sensor failure. The code 05 was also the one I came up with on page 16 of the chart referred to clicky here
as linked in my earlier posting.

I am pretty confident that the same table "0F" in the peake manual (As on PDF page 7 or manual page 13) relates to the M62 (B44) engine as fitted in early 4.4i BMW X5.

I stand to be corrected and will keep an open mind.


Footnote for jmagne - Incidentally I couldnt see anything re suspension or brakes in the peake reserach manual albeit I appreciate our discussions are based on the abilities of test NR.14 and not the abilities of the peake diagnostic equipment.

AW8, do you ever get tiered of talking to your self in forums? this looks like some kinda freakin blog....

here is a discription of the codes. the first 2 numbers indicate the fault code #, the next 2 may indiicate the fault frequency and or the logicstics counters

1 Fuel consuming signal from engine control unit faulty
2 Fuel consuming signal (ti-II) from engine control unit faulty
3 Road signal from ABS/ASC/DSC control unit faulty
4 RPM (tD) from engine control unit faulty
5 Coolant temperature sensor faulty
6 Temperature sensor
7 Outside temperature sensor
8 Fuel level sensor 1 (Fuel pump side)
9 Fuel level sensor 2 (without fuel pump)
10 Tension to high at the power supply
11 EGS signal disturbed
12 Power supply Pin 15
13 Power supply Pin R
14 Service Interval Display (SAI) Reset
15 Pressure Switch
16 Gong Sound (T1)
17 Gong Sound (T2)
18 Gong Sound (T3)
19 Current to high in the instrument cluster
20 Internal error in the LCM module
21 Internal error (IKE)
22 Vehicle speed signal (Tacho-A)
23 Instrument cluster -Bus (I-Bus)
24 Body-Bus (K-Bus)
25 Error during activation of the instrument in the instrument cluster
26 Undefined error
27 Internal Error
28 I-BUS error
29 Power Supply
30 Power Supply
31 Power Supply
32 Power Supply
33 K-BUS
34 Oil Pressure Control Light
35 Reverse gear recognition
3E Error by activation display
3F Instrument cluster current to high
44 Oil pressure switch
87 Body-Bus (K-Bus)
88 (I-Bus)
8B Gong Ton (T3)
8C Power supply Term. R
8D EGS Data lead disturbed
8F Power supply
90 Power supply Term. 15
91 Gong Ton (T2)
92 Gong Ton (T1)
BC Break fluid level
BD Electronic break power
BE LCM internal error
BF Instrument Cluster Internal Error
C1 ABS/ASC/DSC Signal(Tacho)
C3 RPM signal from DME control unit
C6 Output PIN 6 (Code EWS)
C7 Fuel tank sensor 1 (fuel pump side)
CD Fuel consumption signal DME 1
CE Outside temperature sensor
CF Service Interval Display (SIA) Reset
D3 Coolant temperature sensor
D5 Oil temperature sensor
D7 Fuel tank sensor 2 (without fuel pump)
DA Fuel consumption signal DME 2
F0 CAN-Bus off
F4 CAN Identification missing
F5 CAN Identification missing (ASC)
F6 CAN Identification missing (DME)
F7 CAN Identification missing (DME)
F8 CAN Identification missing (DME)
F9 CAN Identification missing (DME)
FA CAN Identification missing (EML)
FB CAN Identification missing (EGS)
FC CAN Identification missing
FD CAN Identification missing