B0125
Serious Severity (Level 4)Night Vision Control Module
B0125 usually means night Vision Control Module.
Can you still drive with B0125?
⚠️Limited driving — get to a repair shop within 1–2 days. Avoid long trips and highway speeds.
Typical repair cost: $150 – $2000
Severity Level 4 — Serious
This code indicates a serious issue that can cause noticeable driveability problems and potential engine damage if not addressed. The vehicle should be taken to a mechanic as soon as possible. Extended driving is not recommended.
Common Symptoms
- Check Engine Light illuminated
- Warning light or malfunction indicator related to the engine/body control module is illuminated
- The engine/body control module is not operating as designed
- Diagnostic trouble code (DTC) stored in module memory
Possible Causes
- Faulty control module — most common cause, test before replacing
- Damaged or corroded wiring/connector in the engine/body control module circuit
- Blown fuse or faulty relay for the engine/body control module
- Poor ground connection — check and clean all related ground points
- Control module fault — rare but possible, only consider after ruling out simpler causes
Common Fixes
- Scan vehicle with a professional-grade OBD2 scanner to read all stored codes and freeze frame data — note the conditions when the code set ($5-118 at shop, free at auto parts store for basic scan)
- Visually inspect the engine/body control module wiring harness and connectors — look for chafed wires, melted insulation, green corrosion, loose pins, or rodent damage (often free to check yourself, $126 diagnostic fee at shop)
- Replace control module if testing confirms it has failed — use OEM quality, avoid the cheapest no-name aftermarket parts that fail in a year ($150-2000)
- Check and replace any blown fuses in the engine/body control module fuse circuit — if fuse blows again, there's still a short that needs to be found ($1-14 for fuses)
- Perform a wiggle test on the engine/body control module wiring harness while monitoring live data — see if the fault returns when you move the harness at different points ($0-142 diagnostic labor)
Estimated Repair Cost
These are estimated costs based on generic repair data. Actual costs may vary depending on your vehicle, location, and labor rates.
Frequently Asked Questions
What does B0125 mean?
B0125 stands for "Night Vision Control Module". B0125 usually means night Vision Control Module.
Can you drive with B0125?
Limited driving — get to a repair shop within 1–2 days. Avoid long trips and highway speeds.
How much does it cost to fix B0125?
Repair costs for B0125 typically range from $150 to $2000, depending on your vehicle make, model, and local labor rates. Common fixes include: Scan vehicle with a professional-grade OBD2 scanner to read all stored codes and freeze frame data — note the conditions when the code set ($5-118 at shop, free at auto parts store for basic scan); Visually inspect the engine/body control module wiring harness and connectors — look for chafed wires, melted insulation, green corrosion, loose pins, or rodent damage (often free to check yourself, $126 diagnostic fee at shop); Replace control module if testing confirms it has failed — use OEM quality, avoid the cheapest no-name aftermarket parts that fail in a year ($150-2000).
Will B0125 clear itself?
B0125 will not clear itself. This code indicates a serious issue that requires immediate attention. The check engine light will remain on until the problem is properly diagnosed and repaired.
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