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1996 BMW 328IS E36
2.8L I6 M52•RWD•AUTOMATIC•gas
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Repairs0Labor482Torque650Fluid8DTC1960Battery1Maintenance0Recalls0
P1525high severityPowertrain

Variable Valve Timing Actuator Supply Voltage

on 1996 BMW 328is E36 2.8L I6 M52 · RWD

What this code means

The DME detected that the supply voltage to the VANOS actuator system is out of specification. Proper voltage is critical for the precise electro-hydraulic control of variable valve timing.

Symptoms

  • Check Engine Light
  • VANOS not operating correctly
  • Power loss at various RPMs
  • Rough idle
  • Poor throttle response

Common causes

  • Low battery voltage
  • Corroded wiring or connectors in VANOS circuit
  • Faulty VANOS solenoid coil
  • DME power supply issue
  • High resistance in power feed

Diagnostic steps

  1. Test battery voltage and alternator output
  2. Measure voltage at VANOS solenoid connector
  3. Inspect wiring for corrosion or damage
  4. Test VANOS solenoid coil resistance
  5. Check DME power supply circuits

Repair notes

Repair the voltage supply issue to the VANOS actuator system.

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