Vikakoodihakemisto · high
U0100
Lost communication with ECM/PCM 'A'
Lost communication with ECM/PCM 'A'
Applies to: All X-TYPE variants, 2001-2009 (saloon & estate) · Confidence: Platform code set + documented X-TYPE failures
Common causes
- ECM unpowered (fuse, relay, ground)
- CAN wiring open
- ECM failure
Quick checks
- Scan access: Generic scan tool (U0xxx) / WDS-IDS (U1xxx, U2xxx)
Typical fixes
- Check the engine control relay and ECM fuses
- Verify ECM power and ground
- Check CAN continuity to the ECM