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2003 BMW M5
4.9L V8 S62•RWD•MANUAL•gas•S62B50
1 active safety recall on this vehicle — view recalls
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Repairs0Labor493Torque2380Fluid8DTC2036Battery1Maintenance0Recalls1
P0921high severityPowertrain

Gear Shift Forward Actuator Circuit Range/Performance

on 2003 BMW M5 4.9L V8 S62 · RWD

What this code means

The forward shift actuator signal is out of the expected range or performing poorly. The actuator may be sticking or reporting incorrect position data.

Symptoms

  • Slipping forward gears
  • Delayed forward engagement
  • Warning light illuminated

Common causes

  • Sticking forward shift actuator
  • Worn actuator mechanism
  • Wiring resistance or intermittent fault
  • Faulty transmission control module

Diagnostic steps

  1. Scan for related shift codes
  2. Monitor actuator position data live
  3. Inspect actuator movement and wiring
  4. Replace actuator if out of spec
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