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2000 BMW 528I
2.8L I6 M52•RWD•AUTOMATIC•gas•M52B28
1 active safety recall on this vehicle — view recalls
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Repairs0Labor496Torque3165Fluid8DTC1244Battery1Maintenance0Recalls1
P1345high severityPowertrain

Misfire Cylinder 1 With Fuel Cut-Off

on 2000 BMW 528i 2.8L I6 M52 · RWD

What this code means

The DME detected a severe misfire on Cylinder 1 that triggered fuel injector shut-off for that cylinder to protect the catalytic converter. BMW uses cylinder-specific fuel cut-off to prevent unburned fuel from damaging the catalyst.

Symptoms

  • Check Engine Light flashing
  • Rough running
  • Loss of power
  • Exhaust smell of unburned fuel
  • Vibration at idle

Common causes

  • Faulty ignition coil Cylinder 1
  • Worn or fouled spark plug Cylinder 1
  • Faulty fuel injector Cylinder 1
  • Low compression Cylinder 1
  • Vacuum leak at Cylinder 1 intake runner

Diagnostic steps

  1. Read misfire counters for all cylinders
  2. Swap ignition coil from Cylinder 1 to another cylinder and retest
  3. Inspect spark plug Cylinder 1
  4. Test fuel injector Cylinder 1
  5. Perform compression test

Repair notes

Replace faulty ignition coil or spark plug on Cylinder 1.

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