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1999 BMW 540IT E39
4.4L V8•RWD•AUTOMATIC•gas
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Repairs0Labor498Torque2399Fluid8DTC1210Battery1Maintenance0Recalls0
P1346high severityPowertrain

Misfire Cylinder 2 With Fuel Cut-Off

on 1999 BMW 540iT E39 4.4L V8 · RWD

What this code means

The DME detected a severe misfire on Cylinder 2 that triggered fuel injector shut-off. The catalytic converter protection system has deactivated the fuel injector for Cylinder 2 to prevent catalyst overheating.

Symptoms

  • Check Engine Light flashing
  • Rough running
  • Loss of power
  • Engine vibration

Common causes

  • Faulty ignition coil Cylinder 2
  • Worn spark plug Cylinder 2
  • Faulty fuel injector Cylinder 2
  • Low compression Cylinder 2
  • Intake valve carbon buildup

Diagnostic steps

  1. Check misfire counters per cylinder
  2. Swap ignition coil from Cylinder 2 to another
  3. Inspect and replace spark plug Cylinder 2
  4. Test fuel injector operation
  5. Compression test Cylinder 2

Repair notes

Replace faulty ignition coil or spark plug on Cylinder 2.

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