If your OBD-II scanner displays B0041, your vehicle has detected an electrical fault within the right front impact sensor circuit. While your engine and transmission will continue operating normally, this diagnostic trouble code (DTC) indicates your Supplemental Restraint System (SRS) may not correctly detect a frontal collision on the passenger side.

Front impact sensors play a critical role in determining when and how airbags deploy. They work with the Airbag Control Module (ACM) to analyze crash severity in milliseconds. If the ACM detects a communication or electrical fault with the right front impact sensor, it stores B0041 and illuminates the airbag warning light.

In this guide, we’ll explain exactly what the B0041 code means, its symptoms, causes, repair costs, diagnostic procedures, and whether it’s safe to continue driving.

Quick Facts

Item	Information
OBD-II Code	B0041
Description	Right Front Impact Sensor Circuit (Subfault)
Category	Body (B)
System	Supplemental Restraint System (SRS)
Severity	★★★★★ (High)
Safe to Drive?	Mechanically yes, safety-wise no
Repair Difficulty	Moderate
Typical Repair Cost	$150–$1,500

What Does B0041 Mean?

The B0041 diagnostic trouble code indicates the Airbag Control Module has detected an electrical fault in the right front impact sensor circuit.

Modern SRS systems use multiple crash sensors positioned throughout the vehicle to detect:

Frontal impacts
Side impacts
Rollover events
Crash severity

The right front impact sensor is typically mounted near the:

Passenger-side frame rail
Radiator support
Core support
Front bumper reinforcement

If the ACM detects:

Excessive resistance
Low resistance
Open circuit
Short circuit
Missing sensor communication

it stores B0041 and turns on the Airbag Warning Light.

Depending on the manufacturer, portions of the airbag system may be disabled until repairs are completed.

Symptoms of B0041

Drivers commonly notice:

Airbag warning light illuminated
SRS warning message
“Service Airbag” notification
Stored B0041 code
Additional SRS codes
Crash sensor communication faults
No drivability problems

The vehicle typically drives normally because the fault only affects the restraint system.

Common Causes

1. Failed Right Front Impact Sensor

The impact sensor itself can fail due to:

Internal electrical failure
Moisture intrusion
Corrosion
Physical impact damage

2. Damaged Front Wiring Harness

The front wiring harness is exposed to:

Road debris
Collision damage
Rodent damage
Improper repair work

3. Corroded Connector

Because the sensor is mounted near the front of the vehicle, moisture and road salt can corrode connector terminals, increasing circuit resistance.

4. Previous Collision Repairs

Many B0041 codes appear after front-end repairs involving:

Improper sensor replacement
Damaged brackets
Repaired wiring
Poor electrical connections

5. Airbag Control Module Failure

Although uncommon, a faulty ACM can incorrectly report crash sensor circuit faults.

6. Water Intrusion

Flood damage or water entering the engine compartment may damage crash sensor connectors or wiring.

How Serious Is B0041?

Extremely serious.

The right front impact sensor helps determine when airbags deploy during a frontal collision.

If the ACM cannot accurately receive crash data, the airbag system may:

Delay deployment
Disable deployment
Store additional SRS faults

Prompt diagnosis is recommended.

Can You Drive With B0041?

Technically, yes.

Should you?

No.

Although the vehicle remains mechanically safe to operate, the airbag system cannot guarantee full occupant protection during an accident.

How to Diagnose B0041

Step 1: Scan the SRS Module

Use a professional scan tool capable of accessing:

Airbag Module
Supplemental Restraint System
Body Control Module

Most inexpensive OBD-II readers cannot access B-codes.

Step 2: Inspect the Right Front Crash Sensor

Inspect the sensor for:

Loose mounting
Physical damage
Corrosion
Water intrusion

A loose or damaged sensor can produce inaccurate crash data.

Step 3: Inspect Wiring

Carefully examine the wiring harness for:

Broken wires
Pinched insulation
Corrosion
Rodent damage

Pay particular attention near the radiator support and passenger-side frame rail.

Step 4: Check for Related Codes

Related airbag codes may include:

B0040
B0045
B0050
B0020
B0022
B0033

Multiple SRS faults often point toward wiring damage or Airbag Control Module issues.

Step 5: Verify Sensor Operation

Using factory diagnostic procedures, verify:

Reference voltage
Ground integrity
Communication with the ACM

Replace the sensor only after confirming the wiring is in good condition.

Common Repair Solutions

Repair	Estimated Cost
Repair front wiring	$150–400
Replace sensor connector	$100–250
Replace right front impact sensor	$250–700
Replace front wiring harness	$300–800
Replace Airbag Control Module	$900–2,000

Common Diagnostic Mistakes

One of the most common mistakes is replacing the crash sensor without inspecting the wiring.

Many B0041 faults are actually caused by:

Corroded connectors
Damaged harnesses
Loose sensor mounting
Previous collision repairs

Always verify the integrity of the wiring before replacing expensive SRS components.

Vehicles That Commonly Experience B0041

B0041 may appear on vehicles including:

Chevrolet Silverado
Chevrolet Tahoe
GMC Sierra
GMC Yukon
Cadillac Escalade
Ford F-150
Ford Expedition
Toyota Camry
Toyota Tacoma
Honda Accord
Honda CR-V
Acura RDX
Nissan Altima
Nissan Pathfinder
Hyundai Santa Fe
Kia Sorento

Manufacturer-specific descriptions may vary.

How to Prevent B0041

Although not every failure can be prevented, these practices help reduce the likelihood of B0041:

Repair collision damage using OEM procedures
Replace damaged crash sensors after impacts
Inspect connectors for corrosion during repairs
Avoid directing high-pressure water at SRS connectors
Secure front wiring away from moving components
Investigate airbag warning lights immediately

Frequently Asked Questions

What causes B0041?

The most common causes include a failed right front impact sensor, damaged wiring, corroded connectors, previous collision repairs, or Airbag Control Module failure.

Where is the right front impact sensor located?

Most vehicles mount it behind the front bumper on the passenger side near the radiator support or front frame rail.

Is B0041 dangerous?

Yes.

A faulty crash sensor can prevent the airbag system from responding correctly during a frontal collision.

Can a small accident trigger B0041?

Yes.

Even a relatively minor impact can damage the sensor or its mounting bracket enough to set the code.

Can I clear B0041 myself?

Yes, but unless the underlying fault has been repaired, the code will return after the next SRS self-test.

Does B0041 always require replacing the sensor?

No.

Many repairs involve damaged wiring, poor electrical connections, or corroded connectors rather than a failed crash sensor.

Final Thoughts

The B0041 code indicates a problem with the right front impact sensor circuit, one of the most important components of your vehicle’s Supplemental Restraint System. While the vehicle may drive normally, the airbag system may not correctly detect or respond to a frontal collision, making this a repair that shouldn’t be postponed.

Fortunately, many B0041 faults are caused by wiring damage or connector corrosion rather than a failed sensor. A careful diagnosis using factory procedures can often identify the true problem and restore full SRS functionality without replacing unnecessary parts.

Continue building your OBD-II and SRS knowledge base:

B0041 Code Explained: Right Front Impact Sensor Circuit (Subfault)