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BMW P1345

Misfire Cylinder 2 With Fuel Cut-off

What P1345 means on a BMW

On BMW vehicles, P1345 is logged when the ECU detects a fault in the ignition / combustion: “Misfire Cylinder 2 With Fuel Cut-off”. P1345 is a manufacturer-specific BMW code (the "1" after the letter marks an OEM-defined code), so its meaning applies to BMW and may differ on other makes.

Common causes & symptoms

Typical triggers for a ignition / combustion code like P1345 include faulty or ageing sensors, wiring/connector faults, a clogged or removed component, or a value drifting outside the ECU's expected window. Symptoms range from a check-engine light only, to limp mode, rough running, higher consumption or failed emissions tests.

P1345 and ECU tuning

When a BMW has had hardware changed for off-road/motorsport use (for example a removed DPF or EGR), the related monitor must be disabled in the ECU map or the code re-appears. Softechpro Solutions performs DPF/EGR/AdBlue/DTC off and recalculates the checksum, so codes like P1345 stay cleared after the flash. Genuine faults should always be repaired, not just hidden.

Related BMW codes

Need to clear P1345 after a delete?

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