Certainly looks like being a culprit and it's a physical fault, not just an error code. I take it it's a permanent fault and won't clear when you clear the DTC's?
If the FBH is knackered...it's another bit on the list for warranty replacement I reckon
Last edited by Mole HD on 4th Oct 2025 3:51 pm. Edited 1 time in total
It won’t go on a clear
I just found this quick on the tinterweb
QUIESCENT CURRENT CONTROL MODULE - ALL VEHICLES
The QCCM is located right rear corner of the luggage compartment. An addition to the Battery Monitoring System, and using signals already transmitted by the BMS control module(s), the QCCM cuts power supply to other non-essential control modules to avoid excessive discharge of the primary battery. The systems supplied via the QCCM are the audio/entertainment systems and the climate control systems.
Some control modules can cause unnecessary battery drain due to the module staying awake after the vehicle electrical system has been shut down. The QCCM in conjunction with the GWM, monitor and control the systems to prevent battery drain.
The system consists of three components:
The BMS control module
The GWM
The QCCM.
The battery monitoring system checks primary battery health by analyzing battery quiescent current, battery current drain or state of charge, and determines if any action is required to protect the primary battery. If action is required this is communicated to the GWM.
The GWM control logic uses this information to determine if action is required to assist primary battery protection. The QCCM receives open and close commands from the GWM and reacts accordingly.
The software that controls the QCCM is contained within the GWM.
The system will be set in transit mode on delivery. Transit mode has no QCCM operation and the relays remain closed. Therefore battery drain could occur and the system will not react to it.
A PDI process requires the system to be put into Normal mode, which enables the quiescent current control module, before handing over to the customer.
The QCCM has a routine to clean the relay contacts if required. This routine is performed using the Land Rover approved diagnostic system and, if unsuccessful, the unit will require replacement.
The module contains a number of fuses which supply and protect the audio/entertainment systems, the climate
systems, the GWM.
On the IID tool, you could try to reset the BMS module by telling it you've fitted a new battery...
If it's tied into that, the BMS might have shut it down...but the DTC is saying there's an internal component failure...which to me would indicate a faulty FBH...since most of the other stuff tied to the QCCM is audio or climate control related.
Last edited by Mole HD on 4th Oct 2025 4:12 pm. Edited 2 times in total
Could well be tied into an aging battery...especially if it's not holding a charge after a night on a charger.
I'm always wary of mine since I've no idea if it's ever been replaced. Most of my driving is short stop/start journeys...since we've only got 25 miles of road on the island. It seems to be fine and holding a decent charge so far...but on the assumption that it's never been replaced... it's an 8 year old battery all the same.
Last edited by Mole HD on 4th Oct 2025 4:25 pm. Edited 1 time in total
Your results from your battery monitor don't look too bad...all green on the cranking voltage...a bit marginal on the low rev and high rev charging...but basically within range.
Last edited by Mole HD on 4th Oct 2025 4:37 pm. Edited 1 time in total
The percentage looks bad dropping from 60% to 47%...but from the first screenshot you posted at 60%, the battery voltage was 12.5v. After 3 starts, it's dropped 0.7v to 12.43v...which isn't that bad.
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