AutoCodes – Lincoln – B1942 Lincoln

B1942 Lincoln Code - Left Front Impact Sensor Fee/Return Circuit Open

Quick Answer

The voltage at the terminal is set by Air Bag Diagnostic Monitor to be slightly less than the battery voltage. Common causes include Faulty Left Front Air Bag Crash Sensor, Left Front Air Bag Crash Sensor harness is open or shorted, Left Front Air Bag Crash Sensor 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: B1942 Lincoln indicates Left Front Impact Sensor Fee/Return Circuit Open.
Common causes: Common causes include Faulty Left Front Air Bag Crash Sensor, Left Front Air Bag Crash Sensor harness is open or shorted, Left Front Air Bag Crash Sensor 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 619

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 B1942 Lincoln Description

The voltage at the terminal is set by Air Bag Diagnostic Monitor to be slightly less than the battery voltage. This circuit is connected to the circuit inside the left front impact sensor. The voltage at the circuit and diagnostic monitor should be the same as the voltage at the diagnostic monitor circuit. The air bag diagnostic monitor periodically pulls voltage low to verify the connection to the terminal. If the voltage at circuit does not pull low as a result of the test, the Diagnostic Trouble Code (DTC) B1941 will be stored in memory and AIR BAG warning light will flash. If the condition is repaired or corrected, DTC B1941 will be stored in memory.

OBDII Code B1942 Lincoln - Left Front Impact Sensor Fee/Return Circuit Open - AutoCodes.com — B1942 Lincoln Code - Left Front Impact Sensor Fee/Return Circuit Open

What does this mean?

What are the Possible Causes of the DTC B1942 Lincoln?

Faulty Left Front Air Bag Crash Sensor
Left Front Air Bag Crash Sensor harness is open or shorted
Left Front Air Bag Crash Sensor circuit poor electrical connection
Faulty Air Bag Diagnostic Monitor

How to Fix the DTC B1942 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 B1942 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 B1942 Lincoln code?

Need more information on how to fix the B1942 Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1942 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 B1942 Lincoln Code

1. What are the common symptoms of OBDII code B1942 in a Lincoln, indicating a Left Front Impact Sensor Fee/Return Circuit Open issue?

- Common symptoms include the airbag warning light on the dashboard illuminating, the airbag system not deploying in a crash, and diagnostic trouble codes related to the left front impact sensor.

2. What can cause the Left Front Impact Sensor Fee/Return Circuit Open error code (B1942) in a Lincoln?

- Possible causes include damaged wiring or connectors leading to the left front impact sensor, a faulty impact sensor itself, or a corroded connection affecting the circuit.

3. How can I diagnose the Left Front Impact Sensor Fee/Return Circuit Open problem in my Lincoln when OBDII code B1942 is triggered?

- Diagnosing involves inspecting the wiring and connectors related to the left front impact sensor for damage, testing the sensor itself, and checking for any corrosion in the circuit.

4. Can I repair the Left Front Impact Sensor Fee/Return Circuit Open issue (B1942) in my Lincoln myself?

- While it is possible for experienced DIYers to address this issue, it is recommended to consult a professional technician or a Lincoln dealership for proper diagnosis and repair to ensure the airbag system's safety and functionality.

5. Are there any safety concerns associated with the Left Front Impact Sensor Fee/Return Circuit Open problem in a Lincoln triggering OBDII code B1942?

- Yes, there are safety concerns as the airbag system may not deploy correctly in the event of a crash if the issue is not addressed promptly. It is crucial to have this problem fixed as soon as possible.

6. How much does it typically cost to repair the Left Front Impact Sensor Fee/Return Circuit Open issue associated with OBDII code B1942 in a Lincoln?

- The cost can vary depending on the extent of the damage and whether the sensor itself needs to be replaced. Repairs may range from a few hundred to over a thousand dollars, including parts and labor.

7. Can resetting the OBDII code B1942 on my Lincoln make the Left Front Impact Sensor Fee/Return Circuit Open problem go away?

- Resetting the code may temporarily turn off the warning light, but it will not fix the underlying issue causing the Left Front Impact Sensor Fee/Return Circuit Open problem. Proper diagnosis and repair are necessary.

8. How urgent is it to address the Left Front Impact Sensor Fee/Return Circuit Open issue indicated by OBDII code B1942 in a Lincoln?

- It is essential to address this issue promptly to ensure the proper functioning of the airbag system in the event of a collision. Delaying repairs could compromise passenger safety.

9. Are there any recalls or technical service bulletins related to the Left Front Impact Sensor Fee/Return Circuit Open problem in Lincoln vehicles?

- It is advisable to check with a Lincoln dealership or the manufacturer's website for any recalls or technical service bulletins related to the Left Front Impact Sensor Fee/Return Circuit Open issue in your specific Lincoln model.

10. How can I prevent the Left Front Impact Sensor Fee/Return Circuit Open problem indicated by OBDII code B1942 from occurring in my Lincoln in the future?

- Regular maintenance checks, avoiding water damage to the impact sensor area, and ensuring proper handling of the airbag system components can help prevent the recurrence of the Left Front Impact Sensor Fee/Return Circuit Open issue.