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B2016 Toyota Code - Open in Right Side Lower MOS

Quick Answer

The B2016 diagnostic trouble code for Toyota vehicles indicates an open circuit in the Right Side Lower MOS (Metal Oxide Semiconductor) of the vehicle's electrical system. Common causes include Wiring harness damage or corrosion, Faulty electrical connections, Defective MOS component. 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
B2016 Toyota indicates Open in Right Side Lower MOS.
Common causes
Common causes include Wiring harness damage or corrosion, Faulty electrical connections, Defective MOS component.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code B2016 Toyota Description

The B2016 diagnostic trouble code for Toyota vehicles indicates an open circuit in the Right Side Lower MOS (Metal Oxide Semiconductor) of the vehicle's electrical system. The MOS is a type of transistor used in various electronic components within the vehicle, such as the engine control module, transmission control module, or other systems. An open circuit in this component can disrupt the flow of electrical signals, leading to malfunctions in the affected systems.

OBDII Code B2016 Toyota - Open in Right Side Lower MOS
B2016 Toyota Code - Open in Right Side Lower MOS

Common Causes of B2016 Toyota

  1. Wiring harness damage or corrosion
  2. Faulty electrical connections
  3. Defective MOS component
  4. Water intrusion or moisture damage
  5. Electrical system overload or short circuit

Symptoms of B2016 Toyota

  1. Engine misfires or rough idling
  2. Transmission shifting issues
  3. Check engine light illuminated
  4. Vehicle stalling or difficulty starting

How to Fix B2016 Toyota

  1. Begin by conducting a thorough inspection of the wiring harness and electrical connections in the vicinity of the Right Side Lower MOS.
  2. Test the MOS component for continuity and functionality using a multimeter to determine if it is faulty.
  3. Replace the damaged or defective MOS component if necessary, ensuring it is compatible with the vehicle's make and model.
  4. Repair any damaged wiring or connectors, addressing any corrosion or water intrusion issues.
  5. Clear the diagnostic trouble codes from the vehicle's system using a scan tool and perform a test drive to confirm that the issue has been resolved.

Cost to Fix B2016 Toyota

The cost of repairing an open circuit in the Right Side Lower MOS can vary depending on the extent of the damage, the specific component affected, and the labor rates at the auto repair shop. On average, the repair costs for this issue can range from $200 to $500, including parts and labor. However, it is essential to note that diagnostic time and labor rates can vary significantly based on location, vehicle make and model, and the expertise of the technician. It is advisable to consult with a reputable auto repair shop for a more accurate estimate based on your specific circumstances.

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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 B2016 Toyota Code

1. What are the common symptoms of OBDII code B2016 in a Toyota related to an open in the right side lower MOS circuit?

- Common symptoms include malfunctions in the right side lower MOS (Metal-Oxide-Semiconductor) circuit, affecting the vehicle's electrical system.

2. What can cause the OBDII code B2016 in a Toyota indicating an open in the right side lower MOS?

- The code B2016 can be triggered by issues such as damaged wiring, loose connections, or a faulty MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) in the circuit.

3. How can I diagnose the source of the open in the right side lower MOS circuit triggering code B2016 in my Toyota?

- Use a multimeter to test the continuity of the wiring, check for loose connections, and inspect the MOSFET for any signs of damage or malfunction.

4. Is it safe to continue driving with OBDII code B2016 related to an open in the right side lower MOS in a Toyota?

- It is advisable to address the issue promptly to prevent further electrical problems or potential system failures while driving.

5. Can I repair the open in the right side lower MOS circuit causing code B2016 in my Toyota myself?

- Depending on your skill level, you may be able to repair the issue by fixing the wiring, securing connections, or replacing the faulty MOSFET. However, professional assistance may be necessary for more complex repairs.

6. How much does it typically cost to fix OBDII code B2016 due to an open in the right side lower MOS in a Toyota?

- The cost of repair can vary depending on the extent of the issue and whether any components need replacement. It is recommended to obtain quotes from automotive professionals for an accurate estimate.

7. Can resetting the OBDII system clear the B2016 code related to an open in the right side lower MOS in a Toyota?

- Resetting the OBDII system may temporarily clear the code, but it is crucial to address the underlying issue causing the fault code to prevent it from reoccurring.

8. Are there any preventive measures to avoid encountering OBDII code B2016 in a Toyota due to an open in the right side lower MOS circuit?

- Routine inspections of the electrical system, avoiding water damage to wiring, and ensuring proper installation of components can help prevent issues leading to code B2016.

9. Will OBDII code B2016 in a Toyota affecting the right side lower MOS impact the vehicle's performance?

- While the code itself may not directly impact performance, unresolved electrical issues can lead to system malfunctions that may affect the vehicle's overall performance.

10. How urgent is it to address OBDII code B2016 indicating an open in the right side lower MOS in a Toyota?

- It is recommended to address the issue promptly to prevent potential electrical failures or safety hazards associated with the malfunctioning circuit.

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