B1325 on Cadillac
Device / Control Module Power Circuit Voltage Out of Range
B1325 on Cadillac vehicles indicates device / control module power circuit voltage out of range. Au7o has documented this code across 1 Cadillac model — most commonly on Lyriq. 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.
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 Cadillac by Model
Cadillac Lyriq(1 issue)
- Rear Camera and Surround Vision System Intermittent Failure2023-2025
The rear camera and surround vision system intermittently displays a black or distorted image when engaging Reverse. The camera feeds may freeze, show the wrong camera angle, or display a "Rear Camera Unavailable" message. The issue is software-related and typically resolves after a vehicle restart.
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View B1325 across all makes →Frequently Asked Questions
What does B1325 mean on Cadillac?▼
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 Cadillac specifically, this code is documented across 1 model.
What causes B1325 on Cadillac vehicles?▼
Common causes on Cadillac: 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 Cadillac?▼
Repair costs vary widely depending on the root cause and specific Cadillac model.
Which Cadillac models have B1325 documented?▼
Au7o has documented B1325 on 1 Cadillac model: Lyriq.