AutoCodes – Lincoln – B0020 Lincoln

B0020 Lincoln Code - Left Side Airbag Deployment Control

Quick Answer

The Restraints Control Module (RCM) monitors all deployable device and sensor circuits for a signal cross coupled (short) between circuits. Common causes include Faulty Left Seat Side Airbag, Left Seat Side Airbag harness is open or shorted, Left Seat Side Airbag 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: B0020 Lincoln indicates Left Side Airbag Deployment Control.
Common causes: Common causes include Faulty Left Seat Side Airbag, Left Seat Side Airbag harness is open or shorted, Left Seat Side Airbag 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 4,727

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 Oct 09, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0020 Lincoln Description

The Restraints Control Module (RCM) monitors all deployable device and sensor circuits for a signal cross coupled (short) between circuits. If the RCM detects a short between the circuits of one device and another device, it will store a DTC for each of the signal cross coupled faults in memory. The RCM sends a message to the Instrument Panel Cluster (IPC) to illuminate the air bag warning indicator. When a normal loop fault is present (one loop is either shorted to battery/ground, open circuit or low resistance), then signal cross coupled diagnostics will not be active. Once the normal loop fault is repaired, then the signal cross coupled diagnostics will resume.

OBDII Code B0020 Lincoln - Left Side Airbag Deployment Control - AutoCodes.com — B0020 Lincoln Code - Left Side Airbag Deployment Control

What does this mean?

What are the Possible Causes of the DTC B0020 Lincoln?

Faulty Left Seat Side Airbag
Left Seat Side Airbag harness is open or shorted
Left Seat Side Airbag circuit poor electrical connection

How to Fix the DTC B0020 Lincoln?

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 B0020 Lincoln 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 B0020 Lincoln code?

Need more information on how to fix the B0020 Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0020 Lincoln code diagnosed by a professional: Find a repair shop in your area

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 B0020 Lincoln Code

1. What are common symptoms of OBDII code B0020 in a Lincoln related to the left side airbag deployment control?

- Common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the left side airbag system.

2. What are the possible causes of OBDII code B0020 in a Lincoln for the left side airbag deployment control?

- Causes can include a faulty left side airbag deployment control module, damaged wiring or connectors, or issues with the left side airbag itself.

3. How can I diagnose the OBDII code B0020 in a Lincoln for the left side airbag deployment control?

- Diagnosing this code typically involves using a professional OBDII scanner to retrieve the specific fault code and then inspecting the left side airbag system components for any visible damage or issues.

4. Can I continue driving my Lincoln with OBDII code B0020 related to the left side airbag deployment control?

- It is not recommended to drive the vehicle with a fault code related to the airbag system, as it may affect the proper deployment of the airbag in the event of a collision.

5. Are there any DIY repair tips for fixing OBDII code B0020 in a Lincoln for the left side airbag deployment control?

- DIY repair is not recommended for airbag system issues due to safety concerns. It is best to have the problem diagnosed and repaired by a qualified mechanic or dealership.

6. How much does it typically cost to repair OBDII code B0020 in a Lincoln for the left side airbag deployment control?

- The cost of repair can vary depending on the specific issue causing the fault code, but it is advisable to budget for potentially significant repair costs due to the critical safety nature of the airbag system.

7. Can resetting the OBDII code B0020 in a Lincoln for the left side airbag deployment control fix the issue?

- Resetting the code may temporarily turn off the warning light, but it will not fix the underlying problem causing the fault code. It is important to address the root cause of the issue for proper repair.

8. Is it safe to attempt to repair or replace the left side airbag system components myself to fix OBDII code B0020 in a Lincoln?

- Due to the critical safety role of the airbag system, it is strongly recommended to leave any repairs or replacements related to the airbag system to trained professionals to ensure proper functionality and safety.

9. How long does it take to repair OBDII code B0020 in a Lincoln for the left side airbag deployment control?

- The repair time can vary depending on the specific issue causing the fault code and the availability of parts. It is best to consult with a professional mechanic for a more accurate estimate.

10. Will fixing OBDII code B0020 in a Lincoln for the left side airbag deployment control affect the overall safety of the vehicle?

- Yes, addressing airbag system issues is crucial for maintaining the safety of the vehicle and ensuring that the airbags deploy correctly in the event of a collision.