AutoCodes – BMW – P103A BMW

P103A BMW Code - VVL System Current Too High

Quick Answer

System current is monitored through the ECU and the variable valve train relay. Common causes include Faulty Valvetronic (VVT) Actuator Motor, Valvetronic Actuator Motor harness is open or shorted, Valvetronic Actuator Motor 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: P103A BMW indicates VVL System Current Too High.
Common causes: Common causes include Faulty Valvetronic (VVT) Actuator Motor, Valvetronic Actuator Motor harness is open or shorted, Valvetronic Actuator Motor 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 3,046

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 Jan 29, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P103A BMW Description

System current is monitored through the ECU and the variable valve train relay. This diagnosis checks for over-temperature and overload conditions and performs short term and long term high current monitoring (looks for current spikes over a threshold, and time vs. current table-based. The Diagnostic Trouble Code (DTC) will set if the VVT motor current draw remains excessive over a defined period, the precise definition of this period varying according to the degree of excess current draw.

OBDII Code P103A BMW - VVL System Current Too High - AutoCodes.com — P103A BMW Code - VVL System Current Too High

What does this mean?

What are the Possible Causes of the DTC P103A BMW?

Faulty Valvetronic (VVT) Actuator Motor
Valvetronic Actuator Motor harness is open or shorted
Valvetronic Actuator Motor circuit poor electrical connection

How to Fix the DTC P103A BMW?

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 P103A BMW 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.

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Need more information on how to fix the P103A BMW code? Get Access to Factory Service Manuals

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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 P103A BMW Code

1. What are the common symptoms of OBDII code P103A in a BMW related to the VVL system current being too high?

- Common symptoms include engine misfires, reduced power, rough idling, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P103A in a BMW indicating that the VVL system current is too high?

- Potential causes include a faulty VVL (Variable Valve Lift) actuator, wiring issues, a malfunctioning VVL solenoid, or a problem with the engine control module.

3. How can I diagnose the OBDII code P103A in a BMW associated with the VVL system current being too high?

- Diagnosis typically involves using a scan tool to retrieve the code, conducting a visual inspection of the VVL components, testing the VVL actuator and solenoid, and checking the wiring for any faults.

4. Can driving with OBDII code P103A in a BMW, signaling high VVL system current, cause further damage to the vehicle?

- Continuing to drive with this code may potentially lead to increased fuel consumption, engine performance issues, and possible damage to the VVL system components over time.

5. How can I repair OBDII code P103A in a BMW due to high VVL system current?

- Repairs may involve replacing the faulty VVL actuator or solenoid, repairing any damaged wiring, resetting the engine control module, and clearing the trouble codes with a scan tool.

6. Are there any DIY tips for fixing OBDII code P103A related to the VVL system current being too high in a BMW?

- While some basic inspections can be done at home, diagnosing and repairing this code may require specialized tools and expertise, so it is recommended to seek professional assistance.

7. Is it safe to continue driving my BMW with the check engine light on due to OBDII code P103A related to the VVL system?

- It is not recommended to ignore the check engine light as it indicates an issue that needs attention. Continuing to drive the vehicle without addressing the problem may lead to further complications.

8. How much does it typically cost to repair OBDII code P103A in a BMW caused by high VVL system current?

- The cost of repairs can vary depending on the exact cause of the issue, labor rates in your area, and whether new parts need to be replaced. It is advisable to obtain quotes from reputable mechanics.

9. Can resetting the check engine light resolve OBDII code P103A in a BMW triggered by high VVL system current?

- Resetting the check engine light may temporarily turn off the warning, but it will not fix the underlying issue causing the code. It is important to diagnose and address the root cause of the problem.

10. Are there any preventative maintenance measures to avoid encountering OBDII code P103A in a BMW related to high VVL system current?

- Regular maintenance, such as timely oil changes, using quality fuel, and following the manufacturer's service schedule, can help prevent issues with the VVL system that may trigger this code.