The following system is abnormal

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MortenL

New member
Joined
Feb 1, 2023
Messages
2
Hi.
My workshop does not have the knowledge to find the fault. These are the error codes I got from the workshop.
Any idea if it can be repaired?
I reckon most of the errors come from one point

Make:Citroen
VIN:VF71 NZKZZBU903436
Odometer:63440 km
Vehicle Software Version:V41.82
Diagnostic Application Version:V7.00.031
Diagnostic path:Automatically Search > C-ZERO > Health Report

System fault code

The following system is abnormal:

Anti-lock Brake System 2 problems exist
1.U1100 Fault - Absence Of Communication With The Solenoid Valves 1. Not Characterised PERMANENT FAULT
2.U1073 General CAN Fault. Not Characterised PERMANENT FAULT

Air Conditioning 3 problems exist
1.B1105 Fault Of The Air Conditioning Compressor. : Loss Of Communication. Not Characterised
2.U1109 Absence Of Communication Fault With The Built-in Systems Interface. Not Characterised
3.U1100 Fault: Absence Of Communication With The Electric Vehicle Management ECU. Not Characterised

Electric Machine Management ECU 3 problems exist
1.P1B18 Loss Of Communication With The Electric Vehicle Management ECU. Not Characterised
2.U1100 Loss Of The Electric Vehicle Management ECU Message JUI Not Characterised
3.U1920 Fault On The K Line. Not Characterised

Electric Vehicle Management ECU 4 problems exist
1.U1161 Communication Fault With The Electric Vehicle Control ECU (EV_ECU) Detected By The Traction Battery ECU (BMU). Not Characterised
2.U1160 Communication Fault With The Electric Vehicle Control ECU (EV_ECU) Detected By The Electric Motor ECU (MCU). Not Characterised
3.U1920 Fault On The Wire Communication Line With The Electric Motor ECU (MCU). Not Characterised
4.P1A 15 Capacitor Charging Fault. Charging Time Too Long

Instrument Panel 4 problems exist
1.U1116 Fault: No Communication With The Hands-free Access ECU. Local
2.U1109 Fault No Communication With BSI. Local
3.U1100 Communication Missing Fault With The Engine ECU. Local
4.u·1121 Fault In The Information Transmitted By The Engine ECU. Distant

Radio 3 problems exist
1.P2803 Fault On The Left-hand Rear Audio Output
2.P2804 Fault On The Right-hand Rear Audio Output
3.P1 ODA Fault Configuration

Traction Battery ECU 3 problems exist
1.P1 AA7 Error In Communication On The CAN With The Electric Vehicle Management ECU. Not Characterised
2.U1100 Absence Of Communication With The Electric Vehicle Management ECU. Not Characterised
3.U1922 Line K Error (Communication Line). Not Characterised

The following systems are OK:
1.Gateway Wiring Housing
2.Power Steering
3.Steering Wheel Angle Sensor
4.Traction Battery Cells Management ECU (Module 1)
5.Traction Battery Cells Management ECU (Module 2)
6.Traction Battery Cells Management ECU (Module 3)
7.Traction Battery Cells Management ECU (Module 4)
8.Traction Battery Cells Management ECU (Module 5)
9.Traction Battery Cells Management ECU (Module 7)
10.Traction Battery Cells Management ECU (Module 8)
11.Traction Battery Cells Management ECU (Module 9)
12.Traction Battery Cells Management ECU (Module 10)
13.Traction Battery Cells Management ECU (Module 11)

MortenL
 
What is the age and condition of your 12V starter battery?

An old, weak or worn out 12V battery will cause a multitude of faults such as you are seeing, especially the U1nnn codes which are related to lack of CAN buss communications. A good strong 12V battery is very important for an EV and it should be kept fully charged at all times for best performance.

The only "real" fault that i can see is the P1A15 code, which will prevent starting. There is a thread on the forum about this fault, its cause and solutions, take a look here: https://myimiev.com/forum/viewtopic.php?t=4225

The other "P" codes are not ones that we have seen here but i suspect are related to the weak 12V condition.
 
Thanks for the detailed answer.
I am not sure about the age of the battery. I've charged it, but I'm not sure about the quality. I'll change it to see if that helps.
Will return when done.

Morten
 
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