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JeffCooper63 · Feb 19th, 2021, 11:20

Yetsreday, just before setting out for my wifes first vaccine shot (!) I got the infamous Hybrid System Malfunction error message. Car worked fine in all modes, and message was erased with the reset button. When we got home, I connected up my icarsoft i906 code reader, and got the stored code C105700, which is a Level 1 Isolation fault apparently - again this DTC was erased without any problems.

Googling this implies it could be something to do with the ISG or the A/C pump, so I rang Volvo, and a dealer, but neither would say wether the "we'll replace it if we need to free" atitude that has been seen in the past is still valid.

So what I'd like to know is wether anyone else has seen this code appear, possibly multiple times, but found that it actually never made any jot of difference to the car itself !!

Feb 19th, 2021, 11:20	#1
JeffCooper63 Junior Member Last Online: Dec 21st, 2023 17:33 Join Date: Jan 2017 Location: Alford	V60 PHEV D6, Hybrid System Malfunction Yetsreday, just before setting out for my wifes first vaccine shot (!) I got the infamous Hybrid System Malfunction error message. Car worked fine in all modes, and message was erased with the reset button. When we got home, I connected up my icarsoft i906 code reader, and got the stored code C105700, which is a Level 1 Isolation fault apparently - again this DTC was erased without any problems. Googling this implies it could be something to do with the ISG or the A/C pump, so I rang Volvo, and a dealer, but neither would say wether the "we'll replace it if we need to free" atitude that has been seen in the past is still valid. So what I'd like to know is wether anyone else has seen this code appear, possibly multiple times, but found that it actually never made any jot of difference to the car itself !!