AutoCodes – Generic – B1935

B1935 Code - Air Bag Passenger Inflator Circuit Resistance Low On Squib Fault

Quick Answer

The Restraints Control Module (RCM) checks all of the Passenger Air Bag Module Circuits for faults. Common causes include Faulty Passenger Air Bag Module, Passenger Air Bag Module harness is open or shorted, Passenger Air Bag Module circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B1935 indicates Air Bag Passenger Inflator Circuit Resistance Low On Squib Fault.
Common causes: Common causes include Faulty Passenger Air Bag Module, Passenger Air Bag Module harness is open or shorted, Passenger Air Bag Module circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 13,598

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 29, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1935 Description

The Restraints Control Module (RCM) checks all of the Passenger Air Bag Module Circuits for faults. If the RCM detects an open or low resistance on the Passenger Air Bag Module Squib 1 Circuits, it will store Diagnostic Trouble Code (DTC) B1935 in memory and illuminate the air bag indicator.

OBDII Code B1935 - Air Bag Passenger Inflator Circuit Resistance Low On Squib Fault - AutoCodes.com — B1935 Code - Air Bag Passenger Inflator Circuit Resistance Low On Squib Fault

What does this mean?

What are the Possible Causes of the DTC B1935?

Faulty Passenger Air Bag Module
Passenger Air Bag Module harness is open or shorted
Passenger Air Bag Module circuit poor electrical connection
Faulty Restraint Control Module (RCM)

How to Fix the DTC B1935?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1935 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B1935 code?

Need more information on how to fix the B1935 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1935 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1935 Buick — Left Seat Back Heater Circuit
B1935 Cadillac — Left Seat Back Heater Circuit
B1935 Chevrolet — Left Seat Back Heater Circuit
B1935 Ford — Air Bag Passenger Inflator Circuit Resistance Low On Squib Fault
B1935 GMC — Left Seat Back Heater Circuit
B1935 Lincoln — Air Bag Passenger Inflator Circuit Resistance Low On Squib Fault
B1935 Mazda — Air Bag Passenger Inflator Circuit Resistance Low On Squib Fault
B1935 Mercury — Air Bag Passenger Inflator Circuit Resistance Low On Squib Fault

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1935 Code

1. What are common symptoms of OBDII code B1935?

The common symptoms of OBDII code B1935 include the airbag warning light illuminating on the dashboard and potential issues with the passenger-side airbag system.

2. What causes the OBDII code B1935 to trigger?

The OBDII code B1935 is triggered when the airbag passenger inflator circuit resistance is detected as low on the squib fault, indicating a potential problem with the airbag system's electrical circuit.

3. How serious is OBDII code B1935?

OBDII code B1935 should be taken seriously as it indicates a fault in the passenger-side airbag system, which could compromise the effectiveness of the airbag in the event of a collision.

4. Can I still drive my vehicle with OBDII code B1935?

It is not recommended to drive the vehicle with OBDII code B1935 present, as the passenger-side airbag system may not deploy correctly in case of an accident. It is advisable to address the issue promptly.

5. What are some DIY repair tips for OBDII code B1935?

DIY repair tips for OBDII code B1935 may include checking the wiring and connections related to the passenger-side airbag system, ensuring they are secure and free from damage. However, it is recommended to seek professional assistance for accurate diagnosis and repair.

6. How can I reset OBDII code B1935?

To reset OBDII code B1935, you will need an OBDII scanner to clear the code after addressing the underlying issue with the passenger-side airbag system. Simply clearing the code without fixing the problem will cause it to reappear.

7. Is it safe to reset OBDII code B1935 without fixing the issue?

It is not safe to reset OBDII code B1935 without fixing the underlying problem in the passenger-side airbag system. Resetting the code without addressing the fault may lead to safety risks in case of an accident.

8. How much does it cost to repair OBDII code B1935?

The cost of repairing OBDII code B1935 can vary depending on the root cause of the issue. It is advisable to consult a professional mechanic to diagnose the problem accurately and provide an estimate for the repair.

9. Can OBDII code B1935 be intermittent?

Yes, OBDII code B1935 can be intermittent, meaning the issue with the airbag passenger inflator circuit resistance may come and go. However, it is crucial to address the problem even if it appears intermittently to ensure the safety of the airbag system.

10. How long does it take to repair OBDII code B1935?

The repair time for OBDII code B1935 can vary based on the complexity of the issue and the availability of replacement parts. It is recommended to consult a professional mechanic for an accurate assessment of the repair timeline.