B2193 — front right or rear left door double lock circuit – open circuit

What does OBD2 code B2193 mean?

B2193 identifies an open circuit in the monitored front-right or rear-left door double-lock system. The circuit may be incomplete because of wiring damage, a connector fault, or an internally failed actuator.

Can I continue driving with B2193 stored?

Driving may be possible if the normal lock function still works, but the affected door may lack its double-lock security function. Repair B2193 promptly, especially if the door does not physically secure.

Does B2193 require immediate replacement of the door lock?

No. B2193 first requires circuit testing because an open wire, loose terminal, corrosion, or poor ground can resemble a failed lock actuator. Replace the actuator only after the wiring has been checked.

How can I locate the open circuit causing B2193?

Begin at the affected door connector, inspect the harness through the hinge area, and use the vehicle wiring diagram to test voltage, ground, and continuity. Repair the open section, clear B2193, and verify both lock modes.

Body control modules serve as the electronic hub for a vehicle's comfort and convenience features. When one of these modules detects that a circuit has fallen outside factory calibration limits, it logs a manufacturer-controlled diagnostic trouble code. B2193 is one such code, indicating a fault within the body electrical system. The module typically requires multiple drive cycles with consistent out-of-spec readings before flagging the code, which helps prevent false triggers from temporary electrical noise.

When the module logs B2193, it also captures a freeze frame snapshot. This record contains engine RPM, calculated load, coolant temperature, and vehicle speed at the exact moment the fault threshold was crossed. Technicians and do-it-yourself mechanics who review this snapshot first often solve the problem faster, since it reveals the driving conditions under which the issue appeared.

Common Symptoms of B2193

• The specific function involved—door locks, power windows, interior or exterior lighting, or wiper operation—functions intermittently or stops working entirely
• No effect on engine performance or drivability in most cases, since the fault lives in the body electrical network rather than the powertrain
• An illuminated warning light or indicator on the instrument cluster, signaling that the module has detected a problem
• Inconsistent operation of switches or controls tied to the affected circuit
• Delayed response or complete non-response from motors and actuators within the system
• Possible flickering or dimming of lighting circuits if that is the affected function

What Causes B2193?

The root cause usually traces to one of several common electrical problems:

• A faulty body control module, though this is not the most frequent culprit
• A blown fuse or a relay that has failed open in the affected circuit
• Connectors that are corroded, dirty, or not fully seated in their housings
• Wiring insulation that has chafed or cracked, especially in areas prone to moisture exposure
• Physical damage to wires routed through door jambs, tailgates, or other pivot points where repeated flexing occurs
• A defective switch, motor, or actuator within the specific system the code references

How to Diagnose B2193

Follow a logical diagnostic path to avoid replacing good parts:

1. Plug in an OBD2 scanner and confirm that B2193 is stored in the module. Save the freeze frame data for later reference, as it shows exactly what was happening when the module first detected the fault.
2. Look for additional trouble codes that may point to a shared cause. Many body electrical problems cascade from a single root failure, and related codes often tell you where to start looking.
3. Check for any applicable technical service bulletins for your make and model. Searching by vehicle identification number on the manufacturer's website or the NHTSA database can reveal known issues with published fixes or software updates.
4. Perform a thorough visual inspection of all connectors and wiring tied to the malfunctioning system. Pay special attention to the door jambs, hinge areas, and anywhere wires experience repeated bending—these locations are the first to show broken strands or damaged insulation.
5. Activate the affected function while monitoring relevant parameter IDs in the scanner's live data stream. Watch for proper voltage signals at switches and motors to confirm the circuit is responding correctly.
6. Clear B2193 from memory, then drive the vehicle through a complete drive cycle that reproduces the freeze frame conditions. If the code returns, the problem is confirmed and needs physical repair.

How to Fix B2193

Address the least expensive possible causes before considering major component replacement:

• Wiring repair or connector remediation: $80–$250
• Switch or actuator replacement: $120–$450
• Body control module repair or replacement: $300–$900

How Much Does It Cost to Fix B2193?

The actual cost depends on which component is responsible for triggering B2193. Independent shop labor rates typically apply to these estimates (parts and labor, USD):

Wiring repair or connector work generally falls between $80 and $250. Replacing a faulty switch or motor usually runs $120 to $450 depending on the part and labor involved. If the body control module itself is at fault, expect to pay $300 to $900 for repair or replacement plus programming.

Overall, fixing B2193 typically costs between $80 and $900. The body control module replacement represents the most expensive scenario, but it is rarely the first thing that fails. A precise diagnosis before purchasing parts always saves money in the long run.

Can You Drive with B2193?

B2193 is usually safe to drive since it does not directly affect engine operation or transmission function. However, the verdict depends on which system is affected. If the malfunction involves exterior lighting, driving at night or in poor visibility becomes hazardous. Wiper failure during rain or snow storms creates a dangerous visibility problem. A central locking fault that prevents the doors from securing the vehicle properly also warrants prompt attention. For most other body electrical failures tied to B2193, you can continue driving while you arrange a convenient repair window.

Related OBD2 Codes

• B2100: Door Driver Key Cylinder Switch Failure
• [B2101: Head Rest