P1012 BMW Code - Valvetronic Reference Eccentric Shaft Sensor Solenoid Loss
Quick Answer
The Valvetronic System is a variable valve lift system that, in combination with variable valve timing, allows infinite adjustment of the intake valve timing and duration. Common causes include Reluctor on Valvetronic Eccentric Shaft Sensor poor installation, Faulty Valvetronic Eccentric Shaft Sensor, Valvetronic Eccentric Shaft Sensor harness is open or shorted. 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
- P1012 BMW indicates Valvetronic Reference Eccentric Shaft Sensor Solenoid Loss.
- Common causes
- Common causes include Reluctor on Valvetronic Eccentric Shaft Sensor poor installation, Faulty Valvetronic Eccentric Shaft Sensor, Valvetronic Eccentric Shaft Sensor harness is open or shorted.
- 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 P1012 BMW Description
What are the Possible Causes of the DTC P1012 BMW?
- Reluctor on Valvetronic Eccentric Shaft Sensor poor installation
- Faulty Valvetronic Eccentric Shaft Sensor
- Valvetronic Eccentric Shaft Sensor harness is open or shorted
- Valvetronic Eccentric Shaft Sensor circuit poor electrical connection
How to Fix the DTC P1012 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 P1012 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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Frequently Asked Questions about P1012 BMW Code
1. What does the OBDII code P1012 mean on a BMW?
P1012 indicates a Valvetronic Reference Eccentric Shaft Sensor Solenoid Loss, meaning there's an issue with the sensor or solenoid that monitors the position of the eccentric shaft in the Valvetronic system.
2. What are the symptoms of code P1012 in a BMW?
Common symptoms include rough idling, reduced engine performance, poor fuel economy, difficulty starting the engine, and the Check Engine Light being illuminated.
3. What causes the P1012 code in a BMW?
The code can be triggered by a faulty eccentric shaft sensor, wiring or connector issues, a malfunctioning solenoid, or mechanical problems within the Valvetronic system.
4. Can I drive my BMW with the P1012 code?
While the car may still be drivable, you risk further damage to the Valvetronic system and reduced engine efficiency. It's best to address the issue promptly.
5. How is the P1012 code diagnosed?
A mechanic will typically use a scan tool to confirm the code, inspect the eccentric shaft sensor and solenoid, check wiring and connectors, and potentially test the Valvetronic motor and related components.
6. How do you fix the P1012 code on a BMW?
Repairs may involve replacing the eccentric shaft sensor, repairing damaged wiring or connectors, or addressing mechanical issues within the Valvetronic system.
7. Can a dirty eccentric shaft sensor cause the P1012 code?
Yes, contamination or debris on the sensor can affect its ability to read the shaft position accurately, potentially triggering the code.
8. How much does it cost to fix the P1012 code on a BMW?
Repair costs can vary widely depending on the specific issue but may range from $200 to $800 or more for parts and labor.
9. Does the P1012 code affect the Valvetronic motor?
While the code primarily relates to the eccentric shaft sensor or solenoid, unresolved issues could impact the Valvetronic motor's operation.
10. Can clearing the P1012 code solve the problem?
Clearing the code might temporarily turn off the Check Engine Light, but the underlying issue must be resolved to prevent the code from returning.
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