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2010 BMW M3 E90
4.0L V8 S65•RWD•DCT•gas•S65B40
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Repairs0Labor493Torque3437Fluid8DTC1459Battery1Maintenance0Recalls0
P1347high severityPowertrain

Misfire Cylinder 3 With Fuel Cut-Off

on 2010 BMW M3 E90 4.0L V8 S65 · RWD

What this code means

The DME detected a severe misfire on Cylinder 3 that triggered protective fuel injector shut-off. Continued driving with this condition may cause catalytic converter damage.

Symptoms

  • Check Engine Light flashing
  • Rough running
  • Loss of power
  • Exhaust odor

Common causes

  • Faulty ignition coil Cylinder 3
  • Worn spark plug Cylinder 3
  • Fuel injector failure Cylinder 3
  • Low compression
  • Valve train issue Cylinder 3

Diagnostic steps

  1. Read cylinder-specific misfire counters
  2. Swap ignition coil to isolate fault
  3. Inspect spark plug condition
  4. Test fuel injector
  5. Perform compression and leak-down test

Repair notes

Replace faulty ignition coil or spark plug on Cylinder 3.

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