B142A Code - Ignition Voltage
Quick Answer
The Airbag Diagnosis Sensor Unit, also known as the Airbag Control Module or Electronic Crash Unit, is a computer that controls the airbag system. Common causes include Faulty Airbag Diagnosis Sensor Unit, Airbag Diagnosis Sensor Unit harness is open or shorted, Airbag Diagnosis Sensor Unit 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
- B142A indicates Ignition Voltage.
- Common causes
- Common causes include Faulty Airbag Diagnosis Sensor Unit, Airbag Diagnosis Sensor Unit harness is open or shorted, Airbag Diagnosis Sensor Unit 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.
Code B142A Description
What are the Possible Causes of the DTC B142A?
- Faulty Airbag Diagnosis Sensor Unit
- Airbag Diagnosis Sensor Unit harness is open or shorted
- Airbag Diagnosis Sensor Unit circuit poor electrical connection
How to Fix the DTC B142A?
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 B142A 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 B142A code?
Need more information on how to fix the B142A code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B142A code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B142A Infiniti — Ignition Voltage
- B142A Nissan — Ignition Voltage
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.
Frequently Asked Questions about B142A Code
1. What are the common symptoms of OBDII code B142A (Ignition Voltage)?
- Common symptoms of code B142A include issues with starting the vehicle, intermittent stalling, and a non-responsive ignition system.
2. What are the possible causes of OBDII code B142A?
- Possible causes of code B142A include a faulty ignition switch, damaged wiring or connectors in the ignition system, or a failing ignition control module.
3. How can I diagnose OBDII code B142A?
- To diagnose code B142A, it is recommended to use a diagnostic scan tool to retrieve the specific fault code. Additionally, inspecting the ignition system components for visible damage or wear can help identify the issue.
4. Can a DIY enthusiast repair OBDII code B142A at home?
- Repairing code B142A may require advanced automotive knowledge and tools. DIY enthusiasts can attempt to repair this code at home by carefully inspecting and potentially replacing the ignition system components themselves.
5. What are some repair tips for fixing OBDII code B142A?
- Repair tips for code B142A include checking and replacing the ignition switch, inspecting and repairing damaged wiring or connectors, and ensuring proper grounding in the ignition system.
6. Is it safe to drive with OBDII code B142A present?
- It is not recommended to drive with code B142A present, as it can lead to potential issues with starting the vehicle or unexpected stalling while driving.
7. Can a low battery voltage trigger OBDII code B142A?
- Yes, a low battery voltage can potentially trigger code B142A as it may affect the proper functioning of the ignition system components.
8. How long does it typically take to repair OBDII code B142A?
- The repair time for code B142A can vary depending on the exact cause of the issue and the availability of replacement parts. It may take a few hours to a full day to diagnose and repair this code.
9. Will resetting the OBDII system clear code B142A?
- Resetting the OBDII system may temporarily clear code B142A, but if the underlying issue is not addressed, the code is likely to reappear once the problem resurfaces.
10. Can extreme weather conditions impact OBDII code B142A?
- Extreme weather conditions, such as extreme cold or heat, can potentially affect the performance of the ignition system components and contribute to triggering code B142A.
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