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Home/DTC Codes/BMW/X2/2018-2024 2.0L Turbo I4/P1447
P1447

VANOS Supply Voltage Low

2018-2024 BMW X2 2.0L Turbo I4

High SeverityPowertrain

Description

The DME detected that the supply voltage to the VANOS (Variable Nockenwellen Steuerung) solenoid system is below the minimum threshold. VANOS controls variable valve timing on BMW engines and requires stable voltage for precise operation.

Symptoms

  • Check Engine Light
  • Rough idle
  • Loss of power at low RPM
  • VANOS rattle on startup
  • Poor fuel economy

Common Causes

  • Low battery voltage
  • Faulty voltage regulator
  • High-resistance connection in VANOS power supply
  • Corroded VANOS solenoid connector
  • Failing alternator

Diagnostic Steps

  1. Test battery voltage under load
  2. Check alternator output
  3. Measure voltage at VANOS solenoid connector
  4. Inspect wiring for high resistance
  5. Check ground connections

Repair Notes

Repair the low-voltage condition by addressing the battery, alternator, or wiring fault.

Related Codes

P0010Intake Camshaft Position Actuator Circuit/Open Bank 1P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1P1520Stop Lamp Switch Signal MalfunctionP1520Camshaft Position Actuator Bank 1 TightP1520Camshaft Position Actuator Bank 1 TightP1520Stop Lamp Switch Signal MalfunctionP1520Cruise Control Switch Circuit MalfunctionP1520Stop Lamp Switch Signal MalfunctionP1521Camshaft Position Actuator Bank 2 TightP1521Camshaft Position Actuator Bank 2 TightP1525Variable Valve Timing Actuator Supply VoltageP1525Variable Valve Timing Actuator Supply Voltage

Other Powertrain Codes

P1447 on Other Vehicles

BMW 3 Series F30

2012-2018 2.0L I4 Turbo N20

BMW 3 Series F30

2012-2018 3.0L I6 Turbo N55

BMW 3 Series G20

2019-2024 2.0L I4 Turbo B48

BMW 318i E36

1992-1998 1.8L I4

BMW 318i E36

1996-1999 1.9L I4 M44

BMW 318is E36

1992-1996 1.8L I4

BMW 318ti E36

1995-1999 1.9L I4

BMW 318ti E36

1996-1999 1.9L I4 M44

Common Questions

What does code P1447 mean on a 2018-2024 BMW X2?

P1447 stands for "VANOS Supply Voltage Low". The DME detected that the supply voltage to the VANOS (Variable Nockenwellen Steuerung) solenoid system is below the minimum threshold. VANOS controls variable valve timing on BMW engines and requires stable voltage for precise operation.

What are the symptoms of P1447 on a BMW X2?

Common symptoms of P1447 include: Check Engine Light, Rough idle, Loss of power at low RPM, VANOS rattle on startup, Poor fuel economy.

What causes P1447 on a 2018-2024 BMW X2?

Common causes of P1447 include: Low battery voltage, Faulty voltage regulator, High-resistance connection in VANOS power supply, Corroded VANOS solenoid connector, Failing alternator.

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