B1425 — Power Window RR Motor Circuit Short To Ground

OBD2 code B1425 flags a problem with the body electrical system (power window RR motor circuit short to ground). The car is usually drivable while you plan the repair. Common culprits: damaged wiring in door jambs or wet areas, body control module (BCM) fault, blown fuse or failed relay.

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 B1425 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 B1425 does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for B1425 (parts and labor, USD, independent shop rates): Repair wiring or connectors: $80–$250; Replace the switch or actuator: $120–$450; BCM repair or replacement: $300–$900. Overall, fixing B1425 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

What is the most common cause of B1425?

The most common causes are: damaged wiring in door jambs or wet areas, body control module (BCM) fault, blown fuse or failed relay.

Is it safe to drive with B1425?

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.

What are the symptoms of B1425?

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.

Will B1425 clear itself?

Sometimes B1425 clears after a few drive cycles if the fault was intermittent — for example a loose connector or a tank of bad fuel. The underlying cause usually remains, so the code tends to return. Clear it once; if it comes back, diagnose rather than erase it repeatedly.

How much does it cost to fix B1425?

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

When your vehicle's onboard computer detects a problem with the right rear power window circuit, it logs trouble code B1425 in memory. This code specifically points to a short-to-ground condition in the motor circuit that operates the rear passenger window. The body control module constantly monitors electrical feedback from all power window motors; when current bleeds to ground unexpectedly, the module recognizes the abnormality and flags it.

The system works through a network of switches, motors, and wiring that runs through the door jambs and body harness. Each window motor has its own dedicated circuit, and the control module tracks voltage and current flow in real time. If the resistance in the rear right window motor circuit drops below acceptable levels due to a ground short, B1425 triggers—typically across two consecutive drive cycles before the check engine light activates. The module also records a freeze frame snapshot capturing engine RPM, load, coolant temperature, and vehicle speed at the exact moment the fault occurred, giving you valuable context for diagnosis.

Resolving B1425 requires identifying whether the issue lies in the motor itself, the window switch, the wiring harness, or possibly the body control module. The code rarely affects engine performance, but it does disable the affected window function until the underlying problem is corrected.

Symptoms

Check engine or warning light illuminates on the instrument cluster
Right rear power window fails to respond when operated from either switch
Window operates intermittently or only moves in one direction
Unusual clicking or buzzing sounds from the door panel when activating the window
Other power window circuits may exhibit similar behavior if a shared harness issue exists
BCM may log additional body system codes alongside B1425
In some cases, the entire window group loses express-up or auto-reverse functionality

Causes

Damaged or corroded wiring in the right rear door jamb harness
Failed right rear window motor with internal short to ground
Malfunctioning window switch causing unintended current path to ground
Loose or water-damaged electrical connector at the motor or switch
Blown fuse protecting the power window circuit
Body control module internal failure affecting window output channels
Chafed wiring from repeated door flex cycles near hinges

How to Diagnose

Connect an OBD2 scanner and verify that B1425 is present. Record all available freeze frame data—this snapshot tells you exactly what conditions existed when the fault first appeared.
Pull any additional stored codes from the body control module. Related faults often point to the root cause; for instance, codes on adjacent window circuits might reveal a common wiring problem.
Perform a thorough visual inspection of the right rear door harness. Check for cracked insulation, corrosion at connectors, and any signs of moisture intrusion. Pay special attention to the flex point where wiring passes through the door hinge area.
Test the window motor circuit directly using a multimeter. Measure resistance at the motor terminals and check for unexpected continuity to ground. Compare readings against specifications for your vehicle.
Operate the window switch while monitoring voltage at the motor connector. A short-to-ground condition will show voltage dropping to zero or showing abnormal ground signatures when the switch is activated.
Clear B1425 after inspection and testing, then run the vehicle through a complete drive cycle including the conditions captured in the freeze frame. If the code returns, the fault is confirmed and component-level testing becomes necessary.

Repair Options and Costs

Wiring repair or connector replacement: $80–$250
Damaged harness sections can often be spliced and sealed, or corroded connectors can be cleaned and treated. This is usually the most economical fix when accessible.

Window switch or motor replacement: $120–$450
If testing confirms the motor or switch as the source, replacement restores proper function. OEM parts cost more than aftermarket, but fit and longevity improve accordingly.

Body control module repair or replacement: $300–$900
BCM failure is less common but possible, especially in older vehicles with accumulated electrical stress. Some modules can be sent out for repair at reduced cost versus full replacement.

Total cost for resolving B1425 typically falls between $80 and $900 depending on which component fails. Always confirm the exact fault through proper testing before purchasing expensive parts.

Can You Drive with B1425?

B1425 presents minimal risk to safe vehicle operation in most cases. The code does not affect engine management, transmission function, or braking systems. However, a non-functional rear passenger window can obstruct rear visibility, and if the fault stems from a central locking or exterior lighting circuit on your specific vehicle, those safety-related functions warrant attention. Use caution in adverse weather and consider prompt repair to restore full window operation.