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Engine-Codes – BMW – P105A BMW

P105A BMW Code - Internal Control Module VVT Error Voltage Too High

Quick Answer

The P105A BMW code indicates that there is an Internal Control Module Variable Valve Timing (VVT) error, specifically that the voltage is too high. Common causes include Faulty VVT solenoid, Damaged wiring or connectors in the VVT system, Malfunctioning ECM. 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
P105A BMW indicates Internal Control Module VVT Error Voltage Too High.
Common causes
Common causes include Faulty VVT solenoid, Damaged wiring or connectors in the VVT system, Malfunctioning ECM.
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 08, 2024
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Code P105A BMW Description

The P105A BMW code indicates that there is an Internal Control Module Variable Valve Timing (VVT) error, specifically that the voltage is too high. This error typically occurs when the Engine Control Module (ECM) detects that the voltage level in the VVT system is outside of the expected range. The VVT system is responsible for adjusting the timing of the engine's valves to optimize performance and fuel efficiency. When the voltage is too high, it can lead to improper timing adjustments, which can affect the engine's performance and overall efficiency.

OBDII Code P105A BMW - Internal Control Module VVT Error Voltage Too High
P105A BMW Code - Internal Control Module VVT Error Voltage Too High

Common Causes of P105A BMW

  1. Faulty VVT solenoid
  2. Damaged wiring or connectors in the VVT system
  3. Malfunctioning ECM
  4. Low engine oil levels
  5. Dirty or clogged VVT components

Symptoms of P105A BMW

  1. Decreased fuel efficiency
  2. Reduced power output
  3. Rough idling
  4. Engine misfires
  5. Illuminated check engine light

How to Fix P105A BMW

  1. Diagnose the issue by using a scan tool to retrieve the fault codes and pinpoint the exact cause of the high voltage error.
  2. Inspect the VVT solenoid, wiring, and connectors for any visible damage or wear. Replace any damaged components.
  3. Check and adjust the engine oil levels to ensure proper lubrication of the VVT components.
  4. Clear the fault codes and reset the ECM to see if the issue persists after repairs.
  5. Test drive the vehicle to confirm that the symptoms have been resolved and that the code does not reappear.

Cost to Fix P105A BMW

The cost of repairing a P105A BMW code can vary depending on the specific cause of the issue 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's important to note that the actual cost may be higher if additional components need to be replaced or if the diagnosis process is more complex. It's recommended to consult with a professional mechanic to get an accurate estimate based on your vehicle's make and model.

What does this mean?

Tech Notes for P105A BMW

BMW Hex Code 0x2A77
BMW Code 10871

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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 P105A BMW Code

1. What are the common symptoms of OBDII code P105A in a BMW related to Internal Control Module VVT Error Voltage Too High?

- Common symptoms include rough idling, decreased engine performance, and potentially even stalling of the vehicle.

2. What usually causes the OBDII code P105A in a BMW related to Internal Control Module VVT Error Voltage Too High?

- The most common causes of this code are issues with the internal control module itself or wiring/connectivity problems in the Variable Valve Timing (VVT) system.

3. How serious is the OBDII code P105A in a BMW related to Internal Control Module VVT Error Voltage Too High?

- While the severity can vary, it is important to address this code promptly as it can impact the performance and efficiency of the engine.

4. Can driving with the OBDII code P105A in a BMW related to Internal Control Module VVT Error Voltage Too High cause further damage?

- Continued driving with this code may lead to increased fuel consumption, potential damage to engine components, and further deterioration of engine performance.

5. What are some DIY repair tips for addressing the OBDII code P105A in a BMW related to Internal Control Module VVT Error Voltage Too High?

- DIY repair tips may include checking and cleaning electrical connections, inspecting the wiring harness for damage, and resetting the fault code to see if it reoccurs.

6. Is it recommended to reset the OBDII code P105A in a BMW related to Internal Control Module VVT Error Voltage Too High without fixing the underlying issue?

- While resetting the code may temporarily clear the warning light, it is crucial to address the root cause to prevent further issues and potential damage to the vehicle.

7. Can a faulty sensor trigger the OBDII code P105A in a BMW related to Internal Control Module VVT Error Voltage Too High?

- Yes, a faulty sensor related to the Variable Valve Timing system can contribute to triggering this error code.

8. How can a professional mechanic diagnose the OBDII code P105A in a BMW related to Internal Control Module VVT Error Voltage Too High?

- A professional mechanic may use specialized diagnostic tools to pinpoint the exact cause, such as conducting a thorough inspection of the VVT system and control module.

9. Are there any recalls or technical service bulletins related to the OBDII code P105A in a BMW related to Internal Control Module VVT Error Voltage Too High?

- It's advisable to check with BMW dealerships or online resources for any recalls or technical service bulletins specific to this error code to stay informed about potential solutions.

10. How much does it typically cost to repair the OBDII code P105A in a BMW related to Internal Control Module VVT Error Voltage Too High?

- Repair costs can vary depending on the exact cause of the issue, but it's recommended to consult with a professional mechanic for a detailed diagnosis and cost estimate.

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