B1676 on Lincoln
Battery Pack Voltage Out Of Range
B1676 on Lincoln vehicles indicates battery pack voltage out of range. Au7o has documented this code across 1 Lincoln model — most commonly on Nautilus. 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 Lincoln range from $250 to $800, 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 Lincoln by Model
Lincoln Nautilus(2 issues)
- Parasitic 12V battery drain — dead battery after short ownership (CSP 24P14 / 24P08)2024
Roughly 46% of polled 2024 Nautilus owners (both ICE and hybrid) report repeated dead 12V batteries, sometimes with as little as 200 miles on the odometer. Two software-related causes identified: (1) Vehicle Dynamics Module stays awake and holds the CAN bus active after key-off (CSP 24P14), and (2) Driver Status Monitor Camera Module software keeps running after vehicle is off (CSP 24P08). A separate hardware-level fix for affected vehicles involves replacing the audio amplifier and 12V AGM battery when parasitic draw remains out of spec after the CSPs are applied.
- Auto Start-Stop malfunction / engine won't auto-restart (weak 12V battery)2019-2022
Nautilus owners frequently report the Auto Start-Stop system behaving erratically — failing to engage, failing to auto-restart smoothly at the light, or throwing a system-fault/malfunction message. The most common root cause is the 12V battery state-of-charge falling below the threshold the system needs (the AGM start-stop battery degrades faster than a conventional battery), so the system disables itself or restarts roughly. The popularity of plug-and-play 'start-stop eliminator' modules for the Nautilus reflects how much the behavior annoys owners.
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View B1676 across all makes →Frequently Asked Questions
What does B1676 mean on Lincoln?▼
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 Lincoln specifically, this code is documented across 1 model.
What causes B1676 on Lincoln vehicles?▼
Common causes on Lincoln: 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 Lincoln?▼
Repair costs on Lincoln range from $250 to $800, depending on the specific model and root cause.
Which Lincoln models have B1676 documented?▼
Au7o has documented B1676 on 1 Lincoln model: Nautilus.