B2374 — Power Sliding Detent (Latch) Circuit Failure

OBD2 code B2374 flags a problem with the body electrical system (power sliding detent (Latch) circuit failure). The car is usually drivable while you plan the repair. Common culprits: body control module (BCM) fault, faulty switch, motor or actuator of the affected system, corroded or loose connectors.

body electrical

Is it safe to drive?

Short-term driving is OK Usually safe to drive — body codes rarely affect drivability. Exceptions: exterior lighting and wipers in bad weather, and central locking faults that can leave the car unsecured.

How to diagnose with an OBD scanner

Read the code and freeze frame Connect an OBD2 scanner, confirm B2374 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
Check for companion codes and TSBs Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many B0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
Inspect wiring and connectors Visually inspect the wiring harness and connectors related to the body electrical system for damage, corrosion, chafing or poor contact.
Subsystem check Operate the affected function while watching its switch and motor PIDs in live data.
Subsystem check Inspect connectors and wiring at flex points (door jambs, tailgate hinges) — wires break there first.
Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm B2374 does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for B2374 (parts and labor, USD, independent shop rates): BCM repair or replacement: $300–$900; Repair wiring or connectors: $80–$250; Replace the switch or actuator: $120–$450. Overall, fixing B2374 usually costs between $80 and $900. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Common questions

How much does it cost to fix B2374?

BCM repair or replacement — $300–$900; Repair wiring or connectors — $80–$250; Replace the switch or actuator — $120–$450. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.

Is it safe to drive with B2374?

Usually safe to drive — body codes rarely affect drivability. Exceptions: exterior lighting and wipers in bad weather, and central locking faults that can leave the car unsecured.

How do I diagnose B2374 myself?

Start with a scan: confirm B2374, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the power sliding detent (Latch) circuit, and verify the suspect component against live data before buying parts.

What is the most common cause of B2374?

The most common causes are: body control module (BCM) fault, faulty switch, motor or actuator of the affected system, corroded or loose connectors.

What are the symptoms of B2374?

Drivers most often notice: warning light on the dashboard, no impact on engine operation in most cases, the affected function (locks, windows, lighting, wipers) works intermittently or not at all.

When your vehicle's body control module detects something wrong with the power sliding detent or latch circuit, it logs OBD2 trouble code B2374. This code lives in the B-series family, which covers body-related electrical faults rather than engine or transmission problems. The sliding detent or latch in question typically refers to the mechanism that holds a powered sliding door, tailgate, or similar panel in its fully open or closed position — and when the circuit feeding that mechanism starts behaving strangely, the module notices.

The affected module — usually the body control module, or BCM — constantly watches the voltage and resistance readings coming through the circuit that powers the sliding latch actuator or motor. When those readings fall outside the acceptable window for a set number of drive cycles, the module decides something is wrong and stores B2374. It also saves freeze frame data alongside the code: a snapshot of engine rpm, electrical load, ambient temperature, and vehicle speed at the exact moment the fault occurred. That snapshot is your best clue for recreating the conditions that triggered the problem in the first place.

Common Symptoms of B2374

The malfunction indicator lamp (MIL) or body-related warning light activates on the instrument cluster
The powered sliding latch or detent mechanism fails to operate, or operates only intermittently
In most cases, engine performance and drivability remain unaffected
Other body functions — locks, windows, interior lighting — may also display intermittent faults if a wiring or connector issue is shared
The sliding panel may feel sticky, laggy, or fail to lock fully into its detent position
A humming or clicking sound from the actuator motor may be absent when the switch is activated
In rare cases, the fault may cause the latch to partially disengage, creating a rattling or loose-panel sensation

What Triggers Code B2374

The most common culprit behind B2374 is a defective switch or actuator motor for the sliding detent mechanism itself — when these components wear out, the circuit readings go haywire. Corroded or water-damaged electrical connectors in the door jamb or tailgate area frequently cause this code because moisture degrades the metal contacts and creates erratic resistance. Damaged wiring running through flex points — where the door or hatch opens and closes repeatedly — is another frequent source of trouble, as wires break or chafe over time. A faulty body control module that misinterprets normal circuit behavior can also set B2374 even when the hardware itself is fine. Blown fuses or failed relays that cut power to the sliding latch circuit will trigger the code as well. Aftermarket accessories wired into the same circuit sometimes create conflicts that the BCM reads as a fault. In some cases, extreme temperature swings or high humidity accelerate connector degradation, especially in vehicles used in coastal or winter-road-salt environments.

How to Diagnose B2374

Begin by connecting an OBD2 scanner and retrieving B2374 along with any other stored codes — related codes often point to the real culprit. Save the freeze frame data, which records the conditions when the fault first appeared, then cross-reference manufacturer technical service bulletins for known issues or software updates tied to this code on your specific make and model. Perform a thorough visual inspection of the wiring harness and connectors associated with the sliding latch circuit, looking for damaged insulation, corrosion, bent pins, or loose fits. With the ignition on, use your scanner to monitor switch and actuator voltage or current in live data while someone operates the latch switch — both inputs should respond predictably. Pay special attention to wiring at flex points like door jambs and hatch hinges where repeated motion causes fatigue fractures. Finally, clear the code, complete a drive cycle that recreates the freeze-frame conditions, and verify that B2374 does not return.

B2374 Repair Options and Costs

If the diagnosis reveals wiring or connector problems, expect to pay between $80 and $250 for parts and labor — cleaning corroded contacts, splicing broken wires, or replacing damaged connectors are straightforward repairs. When the switch or actuator motor itself has failed, replacement typically runs $120 to $450 depending on the part cost and local labor rates. The most expensive scenario — body control module repair or replacement — falls in the $300 to $900 range once you factor in the BCM unit, programming, and labor.

Across all repair paths, fixing B2374 generally costs between $80 and $900. The lower end of that range covers the majority of actual failures, so proper diagnosis before buying parts always saves money — the BCM route is rarely where you should start.

Can You Drive with B2374?

B2374 is classified as short-term severity, meaning most drivers can continue operating the vehicle without immediate safety concerns — body codes rarely interfere with engine performance, braking, or steering. That said, certain scenarios demand faster attention: a non-functional powered sliding latch can leave a door or hatch partially unsecured, and central locking faults linked to the same circuit may compromise vehicle security. In poor weather, a failed wiper circuit related to the fault creates a genuine safety hazard. For routine driving on dry roads with functioning lights and locks, scheduling repair at your convenience is acceptable.