Engine-Codes - BMW - P1078 BMW

P1078 BMW Code - VVT Overload Protection Control Motor Current High Input Bank 1

- Code Popularity: 4,493 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

What are the Possible Causes of the Code P1078 BMW?

  • Faulty Variable Valve Timing (VVT) Servo Motor
  • Variable Valve Timing Servo Motor harness is open or shorted
  • Variable Valve Timing Servo Motor circuit poor electrical connection

How to Fix the P1078 BMW Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the Cost to Diagnose the Code P1078 BMW?

Labor: 1.0

The cost to diagnose the P1078 BMW code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

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What are Code P1078 BMW Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P1078 BMW Code Mean?

On the Valvetronic VVT (Variable Valve Lift Control), the variable valve gear reduces fuel consumption by adjusting the stroke of the intake valves. An electric motor is used to drive a worm gear that moves the eccentric shaft. The eccentric shaft uses intermediate levers that change the effect of the camshaft on the rocker arms. Monitoring of servo motor overload; The VVT servo motor temperature is calculated in the Digital Motor Electronics (DME) using a model. The first stage occurs when it heats beyond a warning threshold. This is 190°C (VVT motor temperature) and causes the VVT to revert to operation in its emergency mode. If the VVT motor were to overheat even further, the VVT system would be completely deactivated upon reaching the deactivation threshold (200°C VVT motor temperature).

P1078 BMW Code - VVT Overload Protection Control Motor Current High Input Bank 1

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