B1A13 on Dodge
Battery Voltage Low (Body Module)
B1A13 on Dodge vehicles indicates battery voltage low (body module). Au7o has documented this code across 1 Dodge model — most commonly on Magnum. This is a body-network code indicating that a body control module has detected battery (system) voltage that is too low for reliable operation. Body modules need a stable voltage to run features like lighting, locks, and other electrical accessories, so when the supply drops below a set threshold the module logs this fault. It usually points to a charging or battery problem rather than a fault in the module itself, and it may appear alongside other low-voltage codes from multiple modules. Common triggers include a weak battery, a charging system fault, or poor electrical connections. Typical repair costs on Dodge range from $100 to $800, depending on the specific model and root cause.
Common Causes of B1A13
- •Weak, aged, or failing battery
- •Faulty alternator or charging system
- •Loose or corroded battery terminals or ground connections
- •Excessive parasitic battery drain
- •Damaged or high-resistance power supply wiring to the module
- •Worn or loose serpentine/accessory belt slipping the alternator
- •Faulty body control module power input circuit
B1A13 on Dodge by Model
Dodge Magnum(1 issue)
- Electrical System Flickering, Dash Light Failures, and Steering Column Module Issues2005-2008
The Dodge Magnum suffers from widespread electrical problems centered around the TIPM (Totally Integrated Power Module) and the steering column control module (clockspring). Symptoms include dash lights flickering or going completely dark while driving, headlights cutting out at night, loss of turn signals, wipers, horn, and cruise control all at once. The steering column module failure is particularly dangerous as it can disable multiple safety systems simultaneously. The TIPM relay failures can cause no-start conditions, fuel pump cutouts, and random electrical gremlins throughout the vehicle.
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View B1A13 across all makes →Frequently Asked Questions
What does B1A13 mean on Dodge?▼
B1A13 stands for "Battery Voltage Low (Body Module)." This is a body-network code indicating that a body control module has detected battery (system) voltage that is too low for reliable operation. Body modules need a stable voltage to run features like lighting, locks, and other electrical accessories, so when the supply drops below a set threshold the module logs this fault. It usually points to a charging or battery problem rather than a fault in the module itself, and it may appear alongside other low-voltage codes from multiple modules. Common triggers include a weak battery, a charging system fault, or poor electrical connections. On Dodge specifically, this code is documented across 1 model.
What causes B1A13 on Dodge vehicles?▼
Common causes on Dodge: Weak, aged, or failing battery, Faulty alternator or charging system, Loose or corroded battery terminals or ground connections, Excessive parasitic battery drain, Damaged or high-resistance power supply wiring to the module. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix B1A13 on a Dodge?▼
Repair costs on Dodge range from $100 to $800, depending on the specific model and root cause.
Which Dodge models have B1A13 documented?▼
Au7o has documented B1A13 on 1 Dodge model: Magnum.