Citroen DS5 P1B24 Waterpump Of The Drive Train Cooling Circuit. Stopping Due To The Voltage Being Too High

[Radu Dragoi]

Hello, maybe someone can help me here with my DS5 hybrid issue. I am using it mostly on short trips, not longer than 100km one way. Recently during the hot days, after few km in the city, I've got the service light and engine malfunction, have the vehicle repaired message. I've went to a garage for diagnostics and the errors were:
P1B24-Waterpump Of The Drive Train Cooling Circuit. Stopping Due To The Voltage Being Too High
POA35-Power Train. Overheating Of The Power Unit
P1AD9-Drive Train. Reversible Alternator Control Fault
P1A79-Drive Train. Starting Does Not Conform
P1AC4-Drive Train. Failure Of The Activation Of The Electromotor Sub-assembly
P1ACD- Drive Train Coolant Pump Short circuit Open Circuit Or
POA35-Power Train. Overheating Of The Power Unit
Can you please support? I hope to find a solution for it.
Thanks in advance

[mickthemaverick]

This is my personal interpretation of those fault codes, not necessarily the views of the Forum admin. It looks to me like you have a problem with the coolant pump which has resulted in the system overheating and producing the various other fault codes. It could be something as simple as the coolant pump connector has come loose and leaving it open circuit so no pumping followed by shut down of other things for safety. I'd make sure all the connectors are secure and then if you still have the issue get the garage to test the coolant pump.