AutoCodes – Generic – B2777

B2777 Code - Passenger Side Curtain Air Bag Module Circuit Resistance Low

Quick Answer

The Sophisticated Air Bag Sensor (SAS) Control Module monitors the Passenger Side Curtain Air Bag Module. Common causes include Faulty Passenger Side Curtain Air Bag Module, Passenger Side Curtain Air Bag Module harness is open or shorted, Passenger Side Curtain 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: B2777 indicates Passenger Side Curtain Air Bag Module Circuit Resistance Low.
Common causes: Common causes include Faulty Passenger Side Curtain Air Bag Module, Passenger Side Curtain Air Bag Module harness is open or shorted, Passenger Side Curtain 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 624

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 Jan 27, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2777 Description

The Sophisticated Air Bag Sensor (SAS) Control Module monitors the Passenger Side Curtain Air Bag Module. The SAS Control Module sets the OBDII code when the Passenger Side Curtain Air Bag Module is not to factory specifications.

OBDII Code B2777 - Passenger Side Curtain Air Bag Module Circuit Resistance Low - AutoCodes.com — B2777 Code - Passenger Side Curtain Air Bag Module Circuit Resistance Low

What does this mean?

What are the Possible Causes of the DTC B2777?

Faulty Passenger Side Curtain Air Bag Module
Passenger Side Curtain Air Bag Module harness is open or shorted
Passenger Side Curtain Air Bag Module circuit poor electrical connection
Faulty Sophisticated Air Bag Sensor (SAS)

How to Fix the DTC B2777?

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 B2777 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 B2777 code?

Need more information on how to fix the B2777 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2777 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2777 Mazda — Passenger Side Curtain Air Bag Module Circuit Resistance Low
B2777 Nissan — PTC Heater LIN Communication

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 B2777 Code

1. What are the common symptoms of OBDII code B2777?

- Common symptoms of OBDII code B2777 include the airbag warning light illuminating on the dashboard, potential non-deployment of the passenger side curtain airbag during a collision, and diagnostic trouble codes stored in the vehicle's system.

2. What can cause the Passenger Side Curtain Air Bag Module Circuit Resistance Low code B2777?

- Possible causes of OBDII code B2777 include damaged wiring or connectors in the passenger side curtain airbag circuit, a faulty airbag module, or a malfunctioning airbag sensor.

3. How serious is OBDII code B2777?

- OBDII code B2777 should be taken seriously as it indicates a potential issue with the passenger side curtain airbag system, which could result in the airbag not deploying properly in the event of a collision, compromising the safety of occupants.

4. Can I continue driving with OBDII code B2777 present?

- It is not recommended to continue driving with OBDII code B2777 present, as the passenger side curtain airbag may not function correctly in case of an accident, increasing the risk of injury to the passenger.

5. How can OBDII code B2777 be diagnosed?

- Diagnosis of OBDII code B2777 typically involves using a diagnostic scanner to retrieve the code and then performing a thorough inspection of the passenger side curtain airbag circuit, wiring, connectors, and airbag module to identify the root cause of the issue.

6. What are some repair tips for fixing OBDII code B2777?

- Repairing OBDII code B2777 may involve repairing or replacing damaged wiring, connectors, or components in the passenger side curtain airbag circuit, resetting the airbag module, and clearing the diagnostic trouble codes from the vehicle's system.

7. Is it safe to reset the OBDII code B2777 without addressing the underlying issue?

- It is not recommended to simply reset OBDII code B2777 without addressing the underlying issue, as the problem may persist, potentially compromising the effectiveness of the passenger side curtain airbag system.

8. Can a DIY enthusiast fix OBDII code B2777 at home?

- While some basic troubleshooting steps like checking wiring and connectors can be done by a DIY enthusiast, diagnosing and repairing OBDII code B2777 may require specialized tools and expertise, so it is advisable to seek professional help.

9. How much does it typically cost to repair OBDII code B2777?

- The cost of repairing OBDII code B2777 can vary depending on the root cause of the issue, the extent of the damage, and the labor rates of the repair shop. It is recommended to obtain quotes from different professionals for an accurate estimate.

10. Can OBDII code B2777 be prevented?

- While some factors leading to OBDII code B2777 may be unavoidable, regular maintenance checks, prompt attention to warning lights, and safe driving practices can help reduce the risk of issues with the passenger side curtain airbag system.