Member Since: 21 Jul 2020
Location: Essex
Posts: 32
Help please! Disco 3 refuses to start - Big F - Fault codes
Hi all, looking for some help with my D3 refusing to start.
This is what's happened:
The car was booked in for annual service, MOT and investigation of parking brake fault (squealing module) so I was going to give it a wash the night before.
I tried to start it but battery was low and turning over was sluggish. It failed to start on its own but did readily when I jumped it off another car. I moved it into a suitable washing position but then absentmindedly turned it off.
I immediately tried to start it again and everything was dead. No lights on the dash, felt as if there was absolutely no power coming from the battery.
Hooked it up to the other car and the electrics came to life but no joy turning it over. Nothing at all, as if it was immobilised (not sure if an immobiliser allows the starter motor to run or not; my starter was not powering up).
I put a charger on it overnight and the same situation occurs.
The voltage on the secret menu was showing only 11.5v when not hooked up to the other car, so I put on a replacement battery, although I'm not 100% sure how that is different to jump leads onto a good one in another vehicle. Someone tried to explain it to me but I'm not sure I get it. Still nothing. All electrics come on but no attempt is made to turn the starter motor.
The voltage when hooked up to the running jumper car shows 13.5v. When I turn off the jumper car, the voltage drops to 11-11.5v
The voltage showing on the secret menu when the replacement battery was fitted still only showed 11.5v
I checked the voltage of the original battery and the replacement one and they showed 12.5v and 12.8v respectively, so it says to me that someting between the battery and the car's systems is wrong.
I have read of possible ECU damage, voltage monitor damage and other things related to jump starting in the old fashioned way (+ve to +ve and -ve to -ve terminals) although I'm at a loss to understand how any high voltage spike could occur doing that.
It has a big F on the dashboard and informs me that there is an engine fault and a transmission fault.
I also have a known HDC fault as my dog has trodden on the yellow button and it's stuck in the down position. I also have a known parking brake fault.
Can anyone shed any light on possible causes? I will list the huge amount of fault codes from my IID below. A lot of them seem completely spurious and are wrong as things like the speakers work but it says they don't. I am assuming that this is due to communication from the main ECU not happening.
If I have to get it recovered then I can do that, but I'd like to know if it's possibly anything simple that could be the root cause. I have read about brake switches causing a problem but it is the low voltage reading that I keep coming back to.
Thanks for reading this far.
Ollie2005 Disco 3 TDV6 SE Auto Bonatti Grey
185k and counting
Last edited by fogaff on 22nd Apr 2024 3:00 pm. Edited 2 times in total
22nd Apr 2024 2:55 pm
fogaff
Member Since: 21 Jul 2020
Location: Essex
Posts: 32
U0100-87 - Lost communication with engine control module/powertrain control module 'A' - Bus signal/message failure - missing a message (EB)
( on 17-05-2028 14:09:36 at 197301 mi )
U0101-87 - Lost communication with transmission control module - Bus signal/message failure - missing a message (EB)
( on 17-05-2028 14:09:39 at 197301 mi )
Steering Angle
U0122-87 - Lost communication with vehicle dynamics control module - Bus signal/message failure - missing a message (2F)
( on 17-05-2028 14:09:39 at 197301 mi )
U1A14-49 - CAN initialisation failure - System internal failure - internal electronic failure (50)
C0051-64 - Steering wheel position sensor - Algorithm based failure - signal plausibility failure (50)
Terrain Response
U0100-87 - Lost communication with engine control module/powertrain control module 'A' - Bus signal/message failure - missing a message (2F)
( on 17-05-2028 14:09:37 at 197301 mi )
U0401-94 - Invalid data received from engine control module/powertrain control module - Component failure - unexpected operation (50)
U0402-94 - Invalid data received from transmission control module - Component failure - unexpected operation (50)
U0416-94 - Invalid data received from vehicle dynamics control module - Component failure - unexpected operation (50)
U0403-94 - Invalid data received from transfer case control module - Component failure - unexpected operation (50)
U0421-94 - Invalid data received from ride level control module - Component failure - unexpected operation (50)
U1A14-49 - CAN initialisation failure - System internal failure - internal electronic failure (50)
C1A02-94 - Rotary encoder stuck in the intermediate position - Component failure - unexpected operation (50)
P173F-00 - Ignition key lock solenoid - circuit high (50)
U0100-87 - Lost communication with engine control module/powertrain control module 'A' - Bus signal/message failure - missing a message (2F)
( on 17-05-2028 14:09:40 at 197301 mi )
Transmission
U0100-87 - Lost communication with engine control module/powertrain control module 'A' - Bus signal/message failure - missing a message (AF)
( on 17-05-2028 14:09:38 at 197301 mi )
Ventilation
B1A70-01 - Compressor solenoid positive supply - General failure information - general electrical failure (50)
B1A73-18 - Left seat heater - General electrical failure - circuit current below threshold (50)
B1A74-18 - Right seat heater - General electrical failure - circuit current below threshold (50)
B1B74-00 - Front foot-defrost mode stepper actuator (50)
B1B74-49 - Front foot-defrost mode stepper actuator - System internal failure - internal electronic failure (50)
B1B75-00 - Front foot-face mode stepper actuator (50)
B1B75-49 - Front foot-face mode stepper actuator - System internal failure - internal electronic failure (50)
B1B76-00 - Front left air blend stepper actuator (50)
B1B76-49 - Front left air blend stepper actuator - System internal failure - internal electronic failure (50)
B1B77-00 - Front right air blend stepper actuator (50)
B1B77-49 - Front right air blend stepper actuator - System internal failure - internal electronic failure (50)
U0073-88 - Control module communication bus off - Bus signal/message failure - bus is off (50)
U0300-55 - Internal control module software incompatibility - System programming failure - is not configured (50)2005 Disco 3 TDV6 SE Auto Bonatti Grey
185k and counting
22nd Apr 2024 2:55 pm
fogaff
Member Since: 21 Jul 2020
Location: Essex
Posts: 32
I forgot to say, before I bought the IID tool, I did a hard reset by disconnecting the battery and connecting the cables to discharge the ECUs as read about on this forum.
Prior to that, I couldn't get it out of park. Doing the reset allowed me to get it out of park.2005 Disco 3 TDV6 SE Auto Bonatti Grey
185k and counting
22nd Apr 2024 3:04 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14129
Hi
Do u happen to have a multimeter plse as would first test the battery with the engine off
Then print out or email those fault codes to ur email , then clear everything and then do another scan to see what comes back
Then see if it will turn over and start , if not use ur multimeter to find a decent ground on the engine by going from the battery neg to the engine , then place a jump lead from that engine point to the battery neg
Plse see if that makes any difference in turning it over
Then do another scan to see if there are any more as that may help u identify what’s going on
Can of course advise u where the earths are around the vehicle if req after ensuring all the fuses are ok and battery is rearing a min of 12.6vdc with the engine off
It may be the battery u swapped over was ok but failed as soon as u tried to crank the engine if the battery was old
Hope that helps
22nd Apr 2024 3:17 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14129
Also to add if the gearbox thinks it’s not in park or neutral it won’t try to turn over , so need to ensure that corrected first
Plus extremely important a good battery is fitted otherwise it can cause havoc, need to see a min of 12.6 Vdc with the engine off , running it should be around 14.5vdc
If u buy a new battery please charge it overnight before fitting it , personally got one from Halfords , was a yuasa 019
Would also order a new HDC switch as at least then u know that is sorted out
Hope that also helps
22nd Apr 2024 3:26 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14129
Found some links for u about the F code , plse see if the gears are the same in what’s being displayed as u move the gear lever
But best to see what the codes are once everything has been cleared and battery in fully charged condition, as u can start to go down a rabbit hole so to speak so always best starting with the basics
Last edited by gstuart on 22nd Apr 2024 3:39 pm. Edited 1 time in total
22nd Apr 2024 3:36 pm
fogaff
Member Since: 21 Jul 2020
Location: Essex
Posts: 32
gstuart wrote:
Hi
Do u happen to have a multimeter plse as would first test the battery with the engine off
Then print out or email those fault codes to ur email , then clear everything and then do another scan to see what comes back
Then see if it will turn over and start , if not use ur multimeter to find a decent ground on the engine by going from the battery neg to the engine , then place a jump lead from that engine point to the battery neg
Plse see if that makes any difference in turning it over
Then do another scan to see if there are any more as that may help u identify what’s going on
Can of course advise u where the earths are around the vehicle if req after ensuring all the fuses are ok and battery is rearing a min of 12.6vdc with the engine off
It may be the battery u swapped over was ok but failed as soon as u tried to crank the engine if the battery was old
Hope that helps
Many thanks.
The 2.8v reading is on the multimeter on the replacement battery when the engine is off. This same battery reads 11.5v on the in car display 'secret menu'.
I connected a jump lead from the negative terminal to a little bolt near the battery that looks like it was being used as an earth already but I will go and put the multimeter on that to be sure.
I have cheked all the engine bay fuses. Not the glove box ones. Should I do that too?
I have been clearing the faults and they all immediately come back again but I will do as you say and clear again, and post new faults list here.
Thanks!2005 Disco 3 TDV6 SE Auto Bonatti Grey
185k and counting
22nd Apr 2024 3:38 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14129
Ur so very welcome
Personally would ignore the screen Vdc display but go on the multimeter readings seeing it’s directly at the battery , do u happen to know how old the current fitted battery is plse
Agreed with regards to ensuring there is a good earth by using the meter on continuity , a test light is also a very good way to test earths around the engine bay
Must confess suprised to hear they all come back straight away and that’s a very long list
Out of curiosity did u get round power washing the D3 or didn’t get round to it plse , thks
Indeed plse let us know how u get on
22nd Apr 2024 3:45 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14129
If u do have to test the cabin fuses behind the glovebox as a tip get 2 x cable ties and use them on the probes as per the picture to make life easier for your self
Hope it’s useful to u
Click image to enlarge
22nd Apr 2024 3:50 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14129
Have just selected a few of the codes here as a reference
Airbag
B1A55-14 - Crash record output circuit - General electrical failure - circuit short to ground or open (AF)
( on 17-05-2028 14:09:26 at 197301 mi )
B1111-11 - Electronic parking brake enable - General electrical failure - circuit short to ground (50)
B1D59-12 - Charging system - General electrical failure - circuit short to battery (50)
Instrument Pack
B1A00-46 - Control module - System internal failure - calibration/parameter memory failure (50)
P173F-00 - Ignition key lock solenoid - circuit high (50)
22nd Apr 2024 3:58 pm
fogaff
Member Since: 21 Jul 2020
Location: Essex
Posts: 32
OK, I have checked that the bolt I was connecting the jump lead to was OK and it was.
I have tested the voltage at the battery again and it is now reading 2.2v. I'm sure it was 2.8v earlier this afternoon. That seems worrying.
Even if the battery is only 2.2v now, I was getting 13.5v when jumping so that rules out a weak battery, no?
Do the brake lights come on with the key on but the engine not running? Mine are not. Does this point to the brake switch that causes a raft of odd problems?2005 Disco 3 TDV6 SE Auto Bonatti Grey
185k and counting
22nd Apr 2024 4:31 pm
fogaff
Member Since: 21 Jul 2020
Location: Essex
Posts: 32
Having cleared the faults and then read them again, there is still a huge list but it's not the same. Just seemingly more random faults.
Airbag
B1A55-14 - Crash record output circuit - General electrical failure - circuit short to ground or open (AF)
( on 17-05-2028 16:19:57 at 197301 mi )
Auxilary Heater
B1A00-49 - Control module - System internal failure - internal electronic failure (50)
B1D22-11 - Water temperature sensor circuit - General electrical failure - circuit short to ground (50)
B1D22-15 - Water temperature sensor circuit - General electrical failure - circuit short to battery or open (50)
B1D23-13 - Overheat sensor circuit - General electrical failure - circuit open (50)
B1D24-11 - Glow plug circuit - General electrical failure - circuit short to ground (50)
B1D24-15 - Glow plug circuit - General electrical failure - circuit short to battery or open (50)
B1D25-11 - Dosing pump circuit - General electrical failure - circuit short to ground (50)
B1D25-15 - Dosing pump circuit - General electrical failure - circuit short to battery or open (50)
B1D26-11 - Combustion air fan circuit - General electrical failure - circuit short to ground (50)
B1D26-15 - Combustion air fan circuit - General electrical failure - circuit short to battery or open (50)
B1D26-93 - Combustion air fan circuit - Component failure - no operation (50)
B1D26-92 - Combustion air fan circuit - Component failure - performance or incorrect operation (50)
B1D27-11 - Coolant pump circuit - General electrical failure - circuit short to ground (50)
B1D27-15 - Coolant pump circuit - General electrical failure - circuit short to battery or open (50)
B1D28-11 - Fuel pre-heater circuit - General electrical failure - circuit short to ground (50)
B1D28-15 - Fuel pre-heater circuit - General electrical failure - circuit short to battery or open (50)
B1A00-16 - Control module - General electrical failure - circuit voltage below threshold (50)
B1A00-17 - Control module - General electrical failure - circuit voltage above threshold (50)
U0073-08 - Control module communication bus off - General failure information - bus signal/message failure (50)
B1D34-68 - Heater in lock out mode - Algorithm based failure - event information (50)
U1A37-87 - Crash status telegram - Bus signal/message failure - missing a message (50)
U1A00-08 - Private bus circuit - General failure information - bus signal/message failure (50)
B1A00-43 - Control module - System internal failure - special memory failure (50)
U0164-87 - Lost communication with heating ventilation and air conditioning control module - Bus signal/message failure - missing a message (50)
B1D63-11 - External control relay - General electrical failure - circuit short to ground (50)
B1D63-15 - External control relay - General electrical failure - circuit short to battery or open (50)
U1A44-6C - Fuel level (50)
U3000-55 - Control module - System programming failure - is not configured (50)
Body Control
B1B93-3A - Seat recline motor speed/position sensor - Frequency modulation/pulse width modulation failure - incorrect, has too many pulses (2F)
( on 17-05-2028 16:20:05 at 197297 mi )
B1C13-3A - Driver's up/down mirror motor feedback circuit - Frequency modulation/pulse width modulation failure - incorrect, has too many pulses (2F)
( on 17-05-2028 18:26:39 at 197297 mi )
Cell Phone
U0029-68 - Vehicle communication bus A performance - Algorithm based failure - event information (50)
U0400-68 - Invalid data received (event diagnostic trouble code) - Algorithm based failure - event information (50)
Instrument Pack
U0100-87 - Lost communication with engine control module/powertrain control module 'A' - Bus signal/message failure - missing a message (2F)
( on 26-12-2041 15:58:50 at 197301 mi )
B1A86-64 - Ignition status - Algorithm based failure - signal plausibility failure (50)
B1A88-49 - System timer - System internal failure - internal electronic failure (50)
Navigation
B110E-25 - Tailgate double locking motor - General signal failure - signal shape/waveform failure (50)
B1110-25 - Air suspension delay power - General signal failure - signal shape/waveform failure (50)
B1A89-13 - Satellite antenna - General electrical failure - circuit open (50)
B1D62-87 - Sub-module 'B' - Bus signal/message failure - missing a message (50)
U0101-87 - Lost communication with transmission control module - Bus signal/message failure - missing a message (A8)
( on 17-05-2028 16:20:10 at 197301 mi )
U0100-87 - Lost communication with engine control module/powertrain control module 'A' - Bus signal/message failure - missing a message (EB)
( on 17-05-2028 16:20:07 at 197301 mi )
Steering Angle
U0122-87 - Lost communication with vehicle dynamics control module - Bus signal/message failure - missing a message (2F)
( on 17-05-2028 16:20:10 at 197301 mi )
C0051-64 - Steering wheel position sensor - Algorithm based failure - signal plausibility failure (50)
Terrain Response
U0100-87 - Lost communication with engine control module/powertrain control module 'A' - Bus signal/message failure - missing a message (2F)
( on 17-05-2028 16:20:07 at 197301 mi )
U0401-94 - Invalid data received from engine control module/powertrain control module - Component failure - unexpected operation (50)
U0402-94 - Invalid data received from transmission control module - Component failure - unexpected operation (50)
U0416-94 - Invalid data received from vehicle dynamics control module - Component failure - unexpected operation (50)
U0403-94 - Invalid data received from transfer case control module - Component failure - unexpected operation (50)
U0421-94 - Invalid data received from ride level control module - Component failure - unexpected operation (50)
U0100-87 - Lost communication with engine control module/powertrain control module 'A' - Bus signal/message failure - missing a message (2F)
( on 17-05-2028 16:20:11 at 197301 mi )
Transmission
U0100-87 - Lost communication with engine control module/powertrain control module 'A' - Bus signal/message failure - missing a message (AF)
( on 17-05-2028 16:20:09 at 197301 mi )
Vehicle Dynamic
U0100-87 - Lost communication with engine control module/powertrain control module 'A' - Bus signal/message failure - missing a message (0B)
( on 17-05-2028 18:28:26 at 197301 mi )
C1B22-24 - Hill descent switch - General signal failure - signal stays high (08)
( on 17-05-2028 18:29:24 at 197301 mi )
Ventilation
B1A70-01 - Compressor solenoid positive supply - General failure information - general electrical failure (50)
B1A73-18 - Left seat heater - General electrical failure - circuit current below threshold (50)
B1A74-18 - Right seat heater - General electrical failure - circuit current below threshold (50)
B1B74-00 - Front foot-defrost mode stepper actuator (50)
B1B74-49 - Front foot-defrost mode stepper actuator - System internal failure - internal electronic failure (50)
B1B75-00 - Front foot-face mode stepper actuator (50)
B1B75-49 - Front foot-face mode stepper actuator - System internal failure - internal electronic failure (50)
B1B76-00 - Front left air blend stepper actuator (50)
B1B76-49 - Front left air blend stepper actuator - System internal failure - internal electronic failure (50)
B1B77-00 - Front right air blend stepper actuator (50)
B1B77-49 - Front right air blend stepper actuator - System internal failure - internal electronic failure (50)2005 Disco 3 TDV6 SE Auto Bonatti Grey
185k and counting
22nd Apr 2024 4:36 pm
fogaff
Member Since: 21 Jul 2020
Location: Essex
Posts: 32
gstuart wrote:
If u do have to test the cabin fuses behind the glovebox as a tip get 2 x cable ties and use them on the probes as per the picture to make life easier for your self
Hope it’s useful to u
Click image to enlarge
That's a great tip. I will do that and check those when it's not about to pour with rain outside.2005 Disco 3 TDV6 SE Auto Bonatti Grey
185k and counting
22nd Apr 2024 4:48 pm
SpiderBaby D3 Decade
Member Since: 21 Sep 2007
Location: Liverpool
Posts: 1411
Long shot but have you checked the alternator hasn't popped?
I had similar issues - no warning just started with "F" on dash then a whole load of faults, Tried a spare battery that started the car but the duff alternator killed that as well.
Easy enough to check.I see no ships........
22nd Apr 2024 5:17 pm
fogaff
Member Since: 21 Jul 2020
Location: Essex
Posts: 32
Thanks a lot. How can I check the alternator isn't bad?2005 Disco 3 TDV6 SE Auto Bonatti Grey
185k and counting
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