C4 Picasso B78 MIL and other warning captions.

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Mandingo
Posts: 1
Joined: 27 Feb 2025, 00:25

C4 Picasso B78 MIL and other warning captions.

Unread post by Mandingo »

Hello all.
Got some problems where I would like some help.
Getting intermittent MIL, Handbrake, ESP/ASR and other warning captions, not all the same time.
MIL may be present at start up or not.
MIL may appear at engine idle after a run of a few miles.
MIL may not show one day, but will show the next day or so.
There was a short time where the engine responded to a power request with a bit of splutter, or at least appeared to, for a second or so.
Otherwise the engine seems to run fine.
Here is a simple diagnostic report...

VIN?VF7**************[VIN obfuscated, can be read by forum staff]
Vehicle manufacturer/model: Citroen/C4 PICASSO (B78)
Year of manufacture:
Odometer?137127
Vehicle Software Version?V42.01
Repair State?1
Inspection Result
There are 9 issues for Power system?
1.Air Circuit. Air Flow Lower Than Recommended
2.Air Circuit. Air Flow Lower Than Recommended (Service)
3.Intersystems CAN. One Of The Parameters Present In A Datastream Sent By The ABS/ESP Is Invalid
4.Controlled Engine Start And Stop. Fault On The Starter Motor Control Line
5.Fuel Circuit. Pressure Measured In The Injection Rail Lower Than The Setting
6.Intersystems CAN. Error In Length Or Prohibited Value On The BSI Datastream
7.Engine Preheating. Fault On The Relay Or On The Pre-heating Plugs
8.Intersystems CAN. Request For Principal Wake-up Of The ECU Not Plausible Or Absent
9.Intersystems CAN. Speed Information Wrong Or Absent
There are 1 issues for Safety and Security system?
1.Windscreen Wiping Or Washing Controls, Fault
There are 1 issues for Vehicle body system?
1.Fault LH Dipped Beam
Inspections are normal for Power system
1.Multiplexed Diesel Additive Pump
Inspections are normal for Safety and Security system
1.Airbag
2.Electric Power Steering
Time and date of inspection?2025-02-25 19:32:22
Inspections are normal for Vehicle body system
1.Windscreen Wiper
2.Signalling Fuse Box
Professional Report
Engine Wiring Housing ,Abnormal
DTC Qty (1)
Temporary Fault
B1138 Fault LH Dipped Beam
Multiplexed Diesel Additive Pump, Normal
Airbag, Normal
Windscreen Wiper, Normal
Switch Module Under The Steering Wheel(Top Of Column), Abnormal
DTC Qty (1)
B1182 Windscreen Wiping Or Washing Controls Fault Temporary Fault
Signalling Fuse Box Normal
Engine System Abnormal
DTC Qty (9) Intermittent
P3007 Air Circuit. Air Flow Lower Than Recommended, Intermittent
P3027 Air Circuit. Air Flow Lower Than Recommended (Service), Intermittent
U1213 Intersystems CAN. One Of The Parameters Present In A Datastream Sent By The ABS/ESP Is Invalid, Intermittent
P1694 Controlled Engine Start And Stop. Fault On The Starter Motor Control Line, Intermittent
P0087 Fuel Circuit. Pressure Measured In The Injection Rail Lower Than The Setting, Intermittent
U1318 Intersystems CAN. Error In Length Or Prohibited Value On The BSI Datastream, Intermittent
P1352 Engine Preheating. Fault On The Relay Or On The Pre-heating Plugs, Intermittent
U2000 Intersystems CAN. Request For Principal Wake-up Of The ECU Not Plausible Or Absent, Intermittent
P0500 Intersystems CAN. Speed Information Wrong Or Absent, Intermittent
Electric Power Steering, Normal

Also, although not picked up by the diagnostics, the Drivers door cannot be opened by keyless entry, although it can be locked.
It was intermittent for a while, but now dead to the touch. Again, suspect connections?
B1138, Don't know why, as the dipped and main beams work.

Based on web searches, the fusebox and battery connections appear to be an area of concern.
The battery was replaced in November 2022 with no apparent problems.

Suggestions please,
Cheers.