B1676 on Jaguar
Battery Pack Voltage Out Of Range
B1676 on Jaguar vehicles indicates battery pack voltage out of range. Au7o has documented this code across 1 Jaguar model — most commonly on XK. A control module reports that its supply voltage has left the acceptable operating window. Ford's published criterion is battery voltage below roughly 9.7 volts for more than about 210 ms with vehicle speed above 20 km/h (12 mph), or above roughly 18 volts at any time. It is a supply-quality code that many Ford-family modules can set, and it commonly appears as a companion code when a weak or degraded 12V battery causes voltage sag during cranking or during auto start-stop restarts. Because the code is set by whichever module saw the sag, it must be read together with that module's identity — when it is stored by the ABS module on Ford-family vehicles it is frequently caused by an internal module fault rather than the battery itself. Typical repair costs on Jaguar range from $200 to $1,200, depending on the specific model and root cause.
Common Causes of B1676
- •Weak, sulfated or end-of-life 12V battery (voltage sag under load or during auto-restart)
- •Failing alternator / charging system, or overcharging producing high-voltage spikes
- •Corroded, loose or high-resistance battery terminals and ground straps
- •Blown module fuse, open or shorted module power/ground harness
- •Poor connector contact at the module; internal ABS module failure on some applications
B1676 on Jaguar by Model
Jaguar XK(1 issue)
- Parasitic Battery Drain (Module Not Sleeping / BCM Fault)2007-2015
XK owners frequently report flat batteries from parasitic draw when a control module fails to enter sleep mode. Normal quiescent draw should fall to roughly 30-50 mA within about three minutes of lock-up; faulty cars have been measured at 200-220 mA, enough to reach 50% state of charge in under two weeks. The Body Control Module (BCM) is a documented culprit (including cases of burnt board traces/failing capacitors), and the fault is worst on cars driven infrequently.
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What does B1676 mean on Jaguar?▼
B1676 stands for "Battery Pack Voltage Out Of Range." A control module reports that its supply voltage has left the acceptable operating window. Ford's published criterion is battery voltage below roughly 9.7 volts for more than about 210 ms with vehicle speed above 20 km/h (12 mph), or above roughly 18 volts at any time. It is a supply-quality code that many Ford-family modules can set, and it commonly appears as a companion code when a weak or degraded 12V battery causes voltage sag during cranking or during auto start-stop restarts. Because the code is set by whichever module saw the sag, it must be read together with that module's identity — when it is stored by the ABS module on Ford-family vehicles it is frequently caused by an internal module fault rather than the battery itself. On Jaguar specifically, this code is documented across 1 model.
What causes B1676 on Jaguar vehicles?▼
Common causes on Jaguar: Weak, sulfated or end-of-life 12V battery (voltage sag under load or during auto-restart), Failing alternator / charging system, or overcharging producing high-voltage spikes, Corroded, loose or high-resistance battery terminals and ground straps, Blown module fuse, open or shorted module power/ground harness, Poor connector contact at the module; internal ABS module failure on some applications. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix B1676 on a Jaguar?▼
Repair costs on Jaguar range from $200 to $1,200, depending on the specific model and root cause.
Which Jaguar models have B1676 documented?▼
Au7o has documented B1676 on 1 Jaguar model: XK.