B2601 on Nissan: How to Diagnose & Fix
Body Control Circuit Fault (manufacturer-specific)
1 Nissan model · 1 documented issue · $180-$1,200 repair
B2601 on Nissan by model: symptoms, diagnosis and fix
A recurring owner complaint on newer Titans is parasitic battery drain after sitting overnight or for several days, leading to slow cranking or a complete no-start. Reports frequently point to the infotainment, telematics, or body control network not going to sleep properly, especially after software glitches, accessory installation, or repeated short-trip use. Some owners replace the battery only to have the drain return until the underlying module issue is addressed.
Common Symptoms
- dead battery after sitting
- slow crank
- click no-start
- battery repeatedly needs jump-starts
- new battery goes dead again
- intermittent infotainment glitches
How to Fix
Proper diagnosis requires a parasitic draw test after all modules should be asleep, along with checking for software updates and isolating the draw by pulling fuses or monitoring current with a clamp meter. Repairs may include battery replacement if damaged by repeated deep discharge, infotainment or telematics module software updates, and in some cases module replacement. Charging system output and battery state of health should be verified before condemning control units.
Owner tips & cautions
- TipUse a low-amp clamp meter or parasitic draw tester instead of guessing with repeated battery replacements.
- TipIf the truck sits often, owners suggest a smart maintainer after confirming there is no abnormal draw.
B2601 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 B2601 mean on a Nissan?
B2601 stands for "Body Control Circuit Fault (manufacturer-specific)." This is a body code whose exact meaning is manufacturer-specific and varies widely by make. On some GM vehicles it indicates the daytime running lamp (DRL) relay control circuit is shorted to ground, while on Nissan/Infiniti it relates to a shift-position signal mismatch seen by the body control module, and on other vehicles it refers to a door latch/closing signal fault. In general it points to a circuit or signal problem detected by a body-system module, so the correct diagnosis depends on the specific vehicle's service information. On Nissan it is documented across 1 model: Titan.
What are the most common causes of B2601?
The most common causes of B2601 are: Shorted/grounded control circuit (e.g., DRL relay on some GM), Wiring or connector damage and corrosion, Faulty relay, switch, or sensor in the affected circuit, Signal mismatch between modules (make-dependent), Faulty body control module, Make-specific component fault per service manual. The specific cause varies by vehicle.
How much does it cost to fix B2601 on a Nissan?
Published repair estimates on Nissan range from $180 to $1,200 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for B2601 on a different make?
View B2601 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.