Back to 1999 BMW 540iT E39

1999 BMW 540IT E39

4.4L V8RWDAUTOMATICgas
Repairs0Labor595Torque2626Fluid7DTC649Battery0Maintenance0Recalls0
P1350high severityPowertrain

Misfire Cylinder 6 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 6 with fuel injector cut-off activated. On BMW inline-6 engines, Cylinder 6 is the rearmost cylinder and most susceptible to heat soak issues.

Symptoms

  • Check Engine Light flashing
  • Rough running
  • Loss of power
  • Uneven idle

Common causes

  • Faulty ignition coil Cylinder 6
  • Worn spark plug Cylinder 6
  • Fuel injector failure
  • Low compression
  • Valve carbon buildup on direct injection engines

Diagnostic steps

  1. Check misfire counters
  2. Swap coil from Cylinder 6
  3. Inspect spark plug condition
  4. Test injector
  5. Perform compression test

Repair notes

Replace faulty ignition coil or spark plug on Cylinder 6.

Other Powertrain codes on this vehicle

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