B1325 on Chevrolet
Device / Control Module Power Circuit Voltage Out of Range
B1325 on Chevrolet vehicles indicates device / control module power circuit voltage out of range. Au7o has documented this code across 3 Chevrolet models — most commonly on Bolt EV, Suburban, Trax. This is a manufacturer-specific body code (common on GM and others) indicating a control module detected its supply voltage outside the acceptable range, typically too low or too high. Modules need a stable voltage (roughly within battery/charging norms); readings that drop too low or spike too high trigger this code. The most frequent real-world cause is a weak battery or charging problem, especially in cold weather. Symptoms depend on the affected module, and the charging system and battery should be checked first. Typical repair costs on Chevrolet range from $150 to $800, depending on the specific model and root cause.
Common Causes of B1325
- •Weak, discharged, or failing battery
- •Charging system/alternator fault (over- or under-charging)
- •Corroded or loose battery terminals and grounds
- •Poor power or ground connection to the module
- •Damaged wiring in the module power circuit
- •High resistance connections causing voltage drop
B1325 on Chevrolet by Model
Chevrolet Bolt EV(1 issue)
- 12V Auxiliary Battery Parasitic Drain - Car Dead and Unable to Wake or Charge2017-2023
The Bolt EV is never fully powered down; modules continue to wake for telematics, charge scheduling and pack maintenance, and the DC-DC converter is supposed to top the 12V accessory battery from the traction pack on a periodic wake cycle. Owners across chevybolt.org and mychevybolt.com report that cycle failing or being outrun by parasitic draw, leaving a flat 12V after as little as three days parked. Reports cluster on cars that sat on dealer lots for months (which permanently degrades the 12V), on cars whose top-up algorithm becomes less aggressive when traction pack state of charge is low, and on cars with a genuine parasitic draw where the drain happens overnight but never during the day. The consequence is worse than on a gas car: with a dead 12V the Bolt will not power up, will not accept a charge, and the charge port latch stays locked with the cable trapped in the port. Owners report repeat failures - one 2021 car died five times, another killed a brand new battery within a month.
Chevrolet Suburban(1 issue)
- Steering Column Lock and Click Noise2015-2025
The 2015+ Suburban uses an electronic steering column lock that can malfunction, causing a clicking noise from the steering column, failure to recognize the key fob, or preventing the vehicle from starting. The electronic lock module replaces the traditional key-cylinder lock and communicates with the body control module (BCM) to verify the key fob is present before allowing the engine to start. When the lock module fails, it may click repeatedly without unlocking, or it may not engage at all, leaving the steering unlocked even when the vehicle is off.
Chevrolet Trax(1 issue)
- 12-Volt Battery Drain or No-Start After Sitting2024-2025
A number of owners have reported dead batteries, slow cranking, or complete no-start conditions after the vehicle sits overnight or for a few days. On new vehicles this often traces to software modules not going to sleep properly, telematics/infotainment wake-up issues, or a weak original battery rather than a traditional charging-system failure. The problem tends to appear early in ownership and can be intermittent.
Looking for B1325 on a different make?
View B1325 across all makes →Frequently Asked Questions
What does B1325 mean on Chevrolet?▼
B1325 stands for "Device / Control Module Power Circuit Voltage Out of Range." This is a manufacturer-specific body code (common on GM and others) indicating a control module detected its supply voltage outside the acceptable range, typically too low or too high. Modules need a stable voltage (roughly within battery/charging norms); readings that drop too low or spike too high trigger this code. The most frequent real-world cause is a weak battery or charging problem, especially in cold weather. Symptoms depend on the affected module, and the charging system and battery should be checked first. On Chevrolet specifically, this code is documented across 3 models.
What causes B1325 on Chevrolet vehicles?▼
Common causes on Chevrolet: Weak, discharged, or failing battery, Charging system/alternator fault (over- or under-charging), Corroded or loose battery terminals and grounds, Poor power or ground connection to the module, Damaged wiring in the module power circuit. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix B1325 on a Chevrolet?▼
Repair costs on Chevrolet range from $150 to $800, depending on the specific model and root cause.
Which Chevrolet models have B1325 documented?▼
Au7o has documented B1325 on 3 Chevrolet models: Bolt EV, Suburban, Trax.