B1325 on Cadillac: How to Diagnose & Fix
Device / Control Module Power Circuit Voltage Out of Range
1 Cadillac model · 1 documented issue
B1325 on Cadillac by model: symptoms, diagnosis and fix
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.
Common Symptoms
- Black screen when in Reverse
- Distorted camera image
- Rear camera unavailable message
- Surround vision showing wrong angle
- Camera image freezes
How to Fix
Apply the latest OTA software updates. If the issue persists, the dealer can reflash the camera control module. Check for moisture in the rear camera housing — condensation can affect image quality. A hard reset of the vehicle (park, lock, wait 5 minutes) usually restores camera function temporarily.
Sources for this issue (1)
B1325 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does B1325 mean on a 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 it is documented across 1 model: Lyriq.
What are the most common causes of B1325?
The most common causes of B1325 are: 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. The specific cause varies by vehicle.
How much does it cost to fix B1325 on a Cadillac?
Repair costs vary widely with the root cause and Cadillac model; each issue on this page carries its own estimate where one is published.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.