# SDR 2026FA0000575

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 9, 2026
- Submitted: July 9, 2026
- Operation: General aviation
- Aircraft: [N385L](https://openairdocs.org/aircraft/N385L), registered now
- Make and model: Diamon DA 42 NG
- Registry model: [Diamon DA 42 NG](https://openairdocs.org/model/diamond-aircraft-ind-da-42-ng) (OpenAirDocs)
- Aircraft serial: 42N512
- Engine: Austro E4
- System (JASC): [7397 · Engine Fuel System Wiring](https://openairdocs.org/jasc/7397)
- Part: Wire Harness
- Part number: E4A95000000
- Condition: Chafed
- Location: Zone 400
- Part time: 662 hours
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026FA0000575

## Discrepancy

DUAL ECU FAILURE ON LH ENGINE.  EMERGENCY LANDING INTO KBMI.  THE DOWNLOAD SHOWED, "PRESSURE CONTROL VALVE POWER FAILURE."  WHEN GAINING ACCESS TO THE PRESSURE CONTROL VALVE, THE ENGINE CONTROL HARNESS WAS FOUND TO BE CHAFFING ON THE CYLINDER HEAD AND THE FUEL SHIELD.  THE ENGINE CONTROL HARNESS WAS REPLACED.  ALL OPERATIONAL ENGINE RUNS PASSED WITH NO ECU FAULTS

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