crash data b1206

[kevb1545]

hi, need some help with pcm crash data
i was changing the n/s headlight and i noticed some water had got on top the pcm
took it off did not seem to bad, so used some wd40 on it and put it back together
when i tried to start it ,just turned over / no start
looked in forscan and it said crashed with b1206
any help with resetting this would be great.

[kevb1545]

just an update on my 2.2 euro5
managed to get another pcm
when i put the key in the ignition, the light is not flashing , but wont turn over
and im getting a u0426 code, bit lost now, any help pls.

[Frag]

Did your PCM have a cover and security/shear bolts on it ?

[knobby1]

just an update on my 2.2 euro5
managed to get another pcm
when i put the key in the ignition, the light is not flashing , but wont turn over
and im getting a u0426 code, bit lost now, any help pls.

U0426 is an immobilizer issue... "invalid data received".

Lord Knobrot

[kevb1545]

thank you for replying knobby,
yes the original 1 had the bolts on , the reason i removed the pcm was some water had got in
and i thought i had better check it out for water ingress. there was and i
wish i had'nt, any way cleaned it up and reinstalled it, b1206 fault and no fuel to the pump
mate off mine had a pcm with exact same numbers tried that ,no good. still the same
youre right about that code , looked it up on web , where others had same issues
someone on there said he had to reset the crash data ,done it with ids?
i have got forscan but had no joy with it.

[Frag]

Refit your original pcm,

Open the glovebox and drop it down,look to the left hand side there’s a inertia reset,usually had a yellow rubber cap on,
Press it to reset,then try it.
(You might have to clear the dtc after it’s reset.)

[kevb1545]

thanks for that, tried it but still the same

[Frag]

So,using your original PCM,you still have B1206 which will not clear ?

Replacing the pcm will not work unless you initialize the new module in PATS functions,as it’s part of the immobiliser system.

[kevb1545]

yes, still the same code , makes me think that its not pcm related problem
did a bit of research and someone said that it would be the eic switch ( electronic instrument cluster)
dont know if thats right or where that switch is located ?

[knobby1]

yes, still the same code , makes me think that its not pcm related problem
did a bit of research and someone said that it would be the eic switch ( electronic instrument cluster)
dont know if thats right or where that switch is located ?

No such animal on a Mk7 that I'm aware of.

Lord Knobrot

[kevb1545]

JUST ONE MORE THING ON THIS IF ANYONE CAN HELP PLS
CANNOT GET RID OF THIS FAULT (B2106 CRASH ERROR) NO MATTER HOW IVE TRIED TO.
IF THERE IS ANYONE WITH TECH KNOWLEDGE ABOUT THIS FAULT
AS I NOW BELIEVE AFTER READING UP, THAT CRASH DATA IS HARD WRITTEN INTO THE PCM
AND CAN ONLY BE BE REMOVED BY OPENING UP THE PCM AND REWRITING THE EEPROM INSIDE
ANY COMMENTS ON THIS WOULD BE GREAT.

[Jim Archer]

Check the wiring from inertia switch to BCM, and then from BCM to PCM - most likely this - it sounds like a dodgy connection.

Jim

[kevb1545]

thanks have a good look tomorrow , got a couple of other things
that need investigating,
thanks for replying.

[kevb1545]

still cant find a way around this
anyway done a bit of further investigation , and ids can reset this fault ( b1206) i was told
not got ids, only forscan, can someone help me with thier ids , i live in staffs
or failing that how to install ids, and the cost involved , thanks.

[Cheztransit]

Hi, did you get to the bottom of this?

I am in the same situation RE B1206 PCM crash = non starting van.

MK7 AWD 2.2 Transit.

I have followed the above steps and advice offered but still no luck. Live out in the sticks so not a lot of local help available. Using FORScan only at the moment.

Any help would be really appreciated. Thanks