Member Since: 04 Jan 2021
Location: Lymington
Posts: 84
suspension fault codes
Hi got some strange dates on the codes any idea why ?
The truck has just had a new battery
This truck has a none functioning suspension and its been slowly getting lower over the last few months and I need to get it working any pointers from the codes?, Compressor failure?
These were the codes before clearing
VIN SALLAAA135A312143
Model L319 - Discovery 3 2005
Vehicle scanned on 20 Dec 2021 16:37:53
IIDControl 3.0.0 Build 84 Android - IIDTool BT V4.0 B2742
Airbag
U0073-88 (2C) Control module communication bus off - Bus signal/message failure - bus is off
( on 16-04-2024 04:55:50 at 184656 km )
B1A00-16 (2C) Control module - General electrical failure - circuit voltage below threshold
( on 19-01-2025 19:39:35 at 188344 km )
Audio System
B1D79-01 (28) Microphone input - General failure information - general electrical failure
( on 31-01-2025 13:49:19 at 188510 km )
U1A03-62 (28) Vehicle configuration parameter - Algorithm based failure - signal compare failure
( on 10-02-2025 09:03:43 at 188606 km )
U2003-25 (28) Fibre optic communication bus - General signal failure - signal shape/waveform failure
( on 10-02-2025 09:03:33 at 188606 km )
U2003-81 (28) Fibre optic communication bus - Bus signal/message failure - invalid serial data received
( on 10-02-2025 09:03:43 at 188606 km )
Body Control
B1A00-16 (28) Control module - General electrical failure - circuit voltage below threshold
( at 187670 km )
B1B01-87 (6C) Key transponder - Bus signal/message failure - missing a message
( on 25-01-2025 00:46:12 at 188410 km )
B1B02-28 (2F) Low frequency coil - General signal failure - signal bias level is out of range/zero adjustment failure
( on 27-04-2023 12:45:47 at 180640 km )
B1B69-16 (2C) 12 volt supply circuit - General electrical failure - circuit voltage below threshold
( on 27-04-2023 12:50:31 at 180640 km )
B1B70-01 (2E) Local interconnection network bus circuit 2 - General failure information - general electrical failure
( on 27-04-2023 12:53:40 at 180640 km )
B1B70-81 (28) Local interconnection network bus circuit 2 - Bus signal/message failure - invalid serial data received
( on 27-04-2023 23:12:51 at 180660 km )
B1B70-83 (28) Local interconnection network bus circuit 2 - Bus signal/message failure - value of signal protection calculation is incorrect
( on 31-12-2024 16:57:47 at 188020 km )
B1B89-3A (2F) Seat slide motor speed/position sensor - Frequency modulation/pulse width modulation failure - incorrect, has too many pulses
B1B91-3A (28) Seat tilt motor speed/position sensor - Frequency modulation/pulse width modulation failure - incorrect, has too many pulses
( on 09-05-2024 03:31:02 at 185390 km )
B1C09-73 (2F) Driver's left/right mirror motor circuit - Mechanical failure - actuator is stuck closed
B1C10-73 (2F) Driver's up/down mirror motor circuit - Mechanical failure - actuator is stuck closed
B1C10-93 (28) Driver's up/down mirror motor circuit - Component failure - no operation
( on 18-10-2024 05:50:11 at 187070 km )
B1C11-73 (28) Passenger's left/right mirror motor circuit - Mechanical failure - actuator is stuck closed
( on 27-04-2023 12:53:40 at 180640 km )
B1C11-93 (68) Passenger's left/right mirror motor circuit - Component failure - no operation
( on 27-04-2023 20:03:46 at 180640 km )
B1C12-73 (2F) Passenger's up/down mirror motor circuit - Mechanical failure - actuator is stuck closed
B1C26-3A (2F) Pedal motor feedback circuit - Frequency modulation/pulse width modulation failure - incorrect, has too many pulses
B1C32-13 (2F) Steering column tilt solenoid - General electrical failure - circuit open
B1C33-3A (28) Steering column tilt feedback signal - Frequency modulation/pulse width modulation failure - incorrect, has too many pulses
( on 31-12-2024 16:57:47 at 188020 km )
B1C34-13 (2F) Steering column telescope solenoid - General electrical failure - circuit open
B1C35-3A (28) Steering column telescope feedback signal - Frequency modulation/pulse width modulation failure - incorrect, has too many pulses
( on 31-12-2024 16:57:47 at 188020 km )
B1C41-23 (68) Tailgate release switch 1 - General signal failure - signal stays low
( on 29-10-2024 10:20:48 at 187350 km )
B1C57-14 (6C) Passive start ignition relay coil circuit - General electrical failure - circuit short to ground or open
( on 27-04-2023 12:45:01 at 180640 km )
B1D06-15 (28) Left turn signal circuit - General electrical failure - circuit short to battery or open
( on 10-04-2024 07:21:31 at 184560 km )
B1D17-87 (28) Bus circuit - Bus signal/message failure - missing a message
( on 05-11-2024 11:27:21 at 187510 km )
U0155-87 (2E) LCD Gauge Communication Lost - Bus signal/message failure - missing a message
( on 27-04-2023 20:18:38 at 180650 km )
U2001-68 (68) Reduced system function - Algorithm based failure - event information
( on 22-11-2024 22:30:23 at 187670 km )
Engine TDV6
P0578-00 (2C) Speed control multi-function input A circuit is stuck
Instrument Pack
U0102-87 (28) Lost communication with transfer case control module - Bus signal/message failure - missing a message
U0159-87 (AE) Lost communication with parking assist control module - Bus signal/message failure - missing a message
U0184-87 (28) Lost communication with audio unit - Bus signal/message failure - missing a message
B1A00-46 (2F) Control module - System internal failure - calibration/parameter memory failure
Parking Aid
B1B48-01 (2F) Rear left outer sensor - General failure information - general electrical failure
U0155-87 (28) LCD Gauge Communication Lost - Bus signal/message failure - missing a message
U0140-87 (28) Lost communication with body control module - Bus signal/message failure - missing a message
U0300-55 (28) Internal control module software incompatibility - System programming failure - is not configured
Parking Brake
U0155-87 (A8) LCD Gauge Communication Lost - Bus signal/message failure - missing a message
( on 22-11-2024 22:49:47 at 187674 km )
C1A00-16 (A8) Control module - General electrical failure - circuit voltage below threshold
( on 22-11-2024 22:53:51 at 187674 km )
Suspension
C1A27-12 (AF) Compressor circuit - General electrical failure - circuit short to battery
( on 15-10-2024 14:08:31 at 187052 km )
C1131-92 (2E) Air supply - Component failure - performance or incorrect operation
( on 04-02-2025 09:20:46 at 188556 km )
C1A20-64 (2E) Pressure increases too slow when filling reservoir - Algorithm based failure - signal plausibility failure
( on 27-04-2023 12:51:08 at 180642 km )
Traffic Message
B1A56-18 (2F) Antenna circuit - General electrical failure - circuit current below threshold
Transfer Case
P0562-00 (28) System voltage low
( on 20-12-2021 16:32:37 at 0 km )
P1807-00 (2F) Four-wheel drive high ratio - short circuit to ground
( on 27-04-2023 12:44:48 at 180642 km )
U0128-87 (28) Lost communication with parking brake control module - Bus signal/message failure - missing a message
( on 17-03-2024 14:47:41 at 184290 km )
Transmission
U0155-87 (6D) LCD Gauge Communication Lost - Bus signal/message failure - missing a message
( on 20-12-2021 16:32:37 at 0 km )
Vehicle Dynamic
U0132-87 (0B) Lost communication with ride level control module - Bus signal/message failure - missing a message
( on 27-04-2023 20:05:55 at 180644 km )
Ventilation
B1A74-18 (6C) Right seat heater - General electrical failure - circuit current below threshold
( on 02-05-2023 20:43:30 at 180674 km )
B1B74-00 (28) Front foot-defrost mode stepper actuator
( on 27-04-2023 12:50:31 at 180642 km )
B1B75-00 (68) Front foot-face mode stepper actuator
( on 27-04-2023 12:50:31 at 180642 km )
B1B76-00 (68) Front left air blend stepper actuator
( on 27-04-2023 12:50:32 at 180642 km )
B1B77-00 (68) Front right air blend stepper actuator
( on 27-04-2023 12:50:32 at 180642 km )
B1B78-84 (2F) System pressure - Bus signal/message failure - signal is below allowable range
These were what came back
VIN SALLAAA135A312143
Model L319 - Discovery 3 2005
Vehicle scanned on 20 Dec 2021 16:42:26
IIDControl 3.0.0 Build 84 Android - IIDTool BT V4.0 B2742
Body Control
B1B02-28 (2F) Low frequency coil - General signal failure - signal bias level is out of range/zero adjustment failure
( on 11-02-2025 15:03:42 at 188720 km )
B1B89-3A (2F) Seat slide motor speed/position sensor - Frequency modulation/pulse width modulation failure - incorrect, has too many pulses
( on 11-02-2025 15:02:50 at 188720 km )
B1C09-73 (2F) Driver's left/right mirror motor circuit - Mechanical failure - actuator is stuck closed
( on 11-02-2025 15:02:50 at 188720 km )
B1C10-73 (2E) Driver's up/down mirror motor circuit - Mechanical failure - actuator is stuck closed
( on 11-02-2025 15:02:50 at 188720 km )
B1C12-73 (2E) Passenger's up/down mirror motor circuit - Mechanical failure - actuator is stuck closed
( on 11-02-2025 15:02:50 at 188720 km )
B1C26-3A (2F) Pedal motor feedback circuit - Frequency modulation/pulse width modulation failure - incorrect, has too many pulses
( on 11-02-2025 15:02:50 at 188720 km )
B1C32-13 (2F) Steering column tilt solenoid - General electrical failure - circuit open
( on 11-02-2025 15:02:50 at 188720 km )
B1C34-13 (2F) Steering column telescope solenoid - General electrical failure - circuit open
( on 11-02-2025 15:02:50 at 188720 km )
B1C57-14 (2F) Passive start ignition relay coil circuit - General electrical failure - circuit short to ground or open
( on 11-02-2025 15:02:50 at 188720 km )
Parking Aid
B1B48-01 (2F) Rear left outer sensor - General failure information - general electrical failure
C1A27-12 (AF) Compressor circuit - General electrical failure - circuit short to battery
( on 11-02-2025 15:01:08 at 188720 km )
Traffic Message
B1A56-18 (2F) Antenna circuit - General electrical failure - circuit current below threshold
Transfer Case
P1807-00 (2F) Four-wheel drive high ratio - short circuit to ground
( on 11-02-2025 15:01:11 at 188720 km )
Ventilation
B1B78-84 (2F) System pressure - Bus signal/message failure - signal is below allowable range
( on 11-02-2025 15:01:09 at 188720 km )
Compressor failure?
20th Dec 2021 10:30 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4657
Going by the dates are you sure you're not driving a DeLorean with some very odd looking appendages?
Clear the lot of them and see what comes back after a drive. Make sure your battery is up to the task though as much of what your GAP tool is reporting suggests a poor battery. Do another diagnostic check afterwards and see what codes come back. yµ (idµ - eAµ) ψ=mψ
20th Dec 2021 10:57 pm
forest66
Member Since: 04 Jan 2021
Location: Lymington
Posts: 84
Yes it had a poor battery it was replaced and a lot of the first codes must be from that
I cleared them and cycled the ignition ran it briefly and re reard it re read it (bottom of first post )
Yes the dates are strange
It does still drive its not quite on the bump stops yet
20th Dec 2021 11:05 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4657
Check the battery voltage before you start engine (12.5v) or above. Then start it, clear existing faults and take it for a run until its fully warmed up.
Read the faults again and post them along with battery voltage.yµ (idµ - eAµ) ψ=mψ
20th Dec 2021 11:12 pm
forest66
Member Since: 04 Jan 2021
Location: Lymington
Posts: 84
OK I'll grab the truck tomorrow, thanks
20th Dec 2021 11:21 pm
forest66
Member Since: 04 Jan 2021
Location: Lymington
Posts: 84
12.5v when I got to it , charging at 14.9 v
I ran it around reread the codes and it was 13.2 when I turned of and re read the volts .
Both fuses are fine and the relay is as well
The suspension is dead and almost of the bump stops
Codes
VIN SALLAAA135A312143
Model L319 - Discovery 3 2005
Vehicle scanned on 21 Dec 2021 12:45:36
IIDControl 3.0.0 Build 84 Android - IIDTool BT V4.0 B2742
Body Control
B1B89-3A (2F) Seat slide motor speed/position sensor - Frequency modulation/pulse width modulation failure - incorrect, has too many pulses
( on 13-02-2025 06:34:57 at 188720 km )
B1C09-73 (2F) Driver's left/right mirror motor circuit - Mechanical failure - actuator is stuck closed
( on 13-02-2025 06:34:57 at 188720 km )
B1C10-73 (2F) Driver's up/down mirror motor circuit - Mechanical failure - actuator is stuck closed
( on 13-02-2025 06:34:57 at 188720 km )
B1C26-3A (2F) Pedal motor feedback circuit - Frequency modulation/pulse width modulation failure - incorrect, has too many pulses
( on 13-02-2025 06:34:57 at 188720 km )
B1C32-13 (2F) Steering column tilt solenoid - General electrical failure - circuit open
( on 13-02-2025 06:34:57 at 188720 km )
B1C34-13 (2F) Steering column telescope solenoid - General electrical failure - circuit open
( on 13-02-2025 06:34:57 at 188720 km )
B1C57-14 (2F) Passive start ignition relay coil circuit - General electrical failure - circuit short to ground or open
( on 13-02-2025 06:34:57 at 188720 km )
C1A27-12 (AF) Compressor circuit - General electrical failure - circuit short to battery
( on 13-02-2025 06:34:59 at 188720 km )
Traffic Message
B1A56-18 (2F) Antenna circuit - General electrical failure - circuit current below threshold
Transfer Case
P1807-00 (2F) Four-wheel drive high ratio - short circuit to ground
( on 13-02-2025 06:35:01 at 188720 km )
Ventilation
B1B78-84 (2F) System pressure - Bus signal/message failure - signal is below allowable range
( on 13-02-2025 06:34:59 at 188720 km )
21st Dec 2021 2:11 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4657
OK so it looks a bit better but you still have a lot of electrical gremlins. It might be worth having a look at the earth straps just to rule them out.
As for the suspension you clearly have an electrical issue somewhere, you will have to get under there and have a look at the wiring and that of the range selector harness on the gearbox.
If you go to "live values" you can select the relevant system and see what the signals are which will help you narrow down the fault/s. The compressor can be rebuilt if the motor is still good, and if it's a Hitachi there is a complete rebuild kit available for it. AMK has less available but the drier/desiccant/filters are available and very easy to do. The small piston is nigh on impossible to access without special tools and will likely lead to the destruction of the unit without them.
Generally both makes are very robust and have strong motors which almost never need attention. (new compressor if they do) However, they do suffer if not serviced on time or have a system leak, as will the valve blocks as a result. You might be lucky if you can sort out the elec gremlins and rebuild the drier.
Whatever you do don't be tempted to buy cheap copies of either compressor or you will have to do it all again in a couple of months, if not a couple of weeks. Try swapping temporarily the compressor relay for another and see if it helps, but if it does don't just leave it at that!!yµ (idµ - eAµ) ψ=mψ
21st Dec 2021 2:42 pm
forest66
Member Since: 04 Jan 2021
Location: Lymington
Posts: 84
ok thanks noted.
i just went and picked it up to have it here to work on, i noticed that there are no lights on the raise and lower switch and the terrain response selector , do you know if that means anything?
ill rustle up some warm clothes and get out and have a fiddle see what i can find , i dont suppose there is a flow chart anywhere for this ?
and any info for which wires i can energize the compressor?
i really appreciate the help
21st Dec 2021 3:18 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4657
No lights on the selectors would certainly confirm there's an electrical fault. "Live values" will be your friend here, so take your time and work through it. You can take screen shots and post them here.
You might have water ingress into the TCM which is located behind the battery causing the range selector issues. However, that wouldn't explain the suspension selector issue. Check the wiring first though as per my previous post and the earth straps as you will need to remove the battery to access the TCM.
I'd be reluctant to post anything on jumping the compressor until I know more about what's wrong.
Pay particular attention to the earth strap from the transfer case to the chassis. Don't just take a visual, inspect it closely for corrosion same applies with the other straps. yµ (idµ - eAµ) ψ=mψ
21st Dec 2021 3:33 pm
forest66
Member Since: 04 Jan 2021
Location: Lymington
Posts: 84
OK noted
I tried to get the pump off but top bolt beat me I can't even see it yet .
I did find a melted pipe
21st Dec 2021 6:52 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13654
PROFSR G wrote:
Going by the dates are you sure you're not driving a DeLorean with some very odd looking appendages?
Clear the lot of them and see what comes back after a drive. Make sure your battery is up to the task though as much of what your GAP tool is reporting suggests a poor battery. Do another diagnostic check afterwards and see what codes come back.
Thought at first that was a shopping list
21st Dec 2021 6:55 pm
forest66
Member Since: 04 Jan 2021
Location: Lymington
Posts: 84
haha it was pretty long wasnt it,
@ prof ok thanks, noted again ill look closer at the earth strap etc , thanks for the pointers, im a little rusty and really appreciate the directions i did look at a few of the live values but i didnt really know what to look for ,
im a retired old school landy tech give me a lt77 gearbox, or a tdi i can rebuild it, but electronics is not sth i know well but im learning being a d3 owner,
and this fix will give me the knowledge i need when my own needs doing
the broken pipe ive not looked where it goes yet hopefully not far, if u know which it is please say i need to order one i ran out of light today ,
the top bolt on the compressor is a is there a way to get to it , under rear arch shield off ? the top half of the plastic cover box seems to fowl access, does the top half wiggle out the way ?
21st Dec 2021 7:32 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4657
forest66 wrote:
I tried to get the pump off but top bolt beat me I can't even see it yet .
I did find a melted pipe
Yeah the bolts rust into the captive nuts on the chassis rail. Undo the compressor bottom mounts (spray oil) and once everything is disconnected remove it that way. You will then be able to access the bracket bolts for which new captive nuts are available.
The toasted pipe is possibly as a result of the compressor overrunning and consequently overheating.
The compressor might be alright but you'll have to bench test it and rebuild it anyway. Personally given what you have posted I'd seriously be considering a new one as it's likely the original 07.
There might be enough pipe for you to cut and reattach, if not a new one is available.yµ (idµ - eAµ) ψ=mψ
21st Dec 2021 7:43 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4657
gstuart wrote:
PROFSR G wrote:
Going by the dates are you sure you're not driving a DeLorean with some very odd looking appendages?
Clear the lot of them and see what comes back after a drive. Make sure your battery is up to the task though as much of what your GAP tool is reporting suggests a poor battery. Do another diagnostic check afterwards and see what codes come back.
Thought at first that was a shopping list
Did you see the dates attached to his fault codes? back to the future stuff if ever I saw it. yµ (idµ - eAµ) ψ=mψ
21st Dec 2021 7:45 pm
forest66
Member Since: 04 Jan 2021
Location: Lymington
Posts: 84
ok cool , is a 04 d3 not a 07 (mine is 07) , so its likely the original and
this is a Hitachi ? so u think it would be better to fit a new one?, yes as you say it must of got hot at one time,
looking a the old faults, am i right in: it wasnt making enough air at one time
C1A27-12 (AF) Compressor circuit - General electrical failure - circuit short to battery
( on 15-10-2024 14:08:31 at 187052 km )
C1131-92 (2E) Air supply - Component failure - performance or incorrect operation
( on 04-02-2025 09:20:46 at 188556 km )
-64 (2E) Pressure increases too slow when filling reservoir - Algorithm based failure - signal plausibility failure
( on 27-04-2023 12:51:08 at 180642 km )
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is there a way to get to it , under rear arch 
