Guide · Updated October 2026
What fails an EICR?
A report is unsatisfactory if it contains any C1, C2 or FI observation. These are the findings we see most often in UK homes.
The common failures
| Finding | Usual code |
|---|---|
| No RCD protection for socket outlets | C2 |
| Missing or undersized main protective bonding to gas and water | C2 |
| Damaged sockets or switches with live parts exposed | C1 |
| Signs of overheating or scorching at accessories | C2 |
| Low insulation resistance with no traceable cause | FI |
| Circuits that cannot be identified or traced | FI |
| Socket or light fitting unsuitable for a bathroom zone | C2 |
What does not fail a report
Older cable colours, a missing circuit chart, no surge protection or a plastic consumer unit in a safe location are usually C3: improvement recommended. They are worth fixing but do not make the report unsatisfactory by themselves.
How to reduce the chance of a fail
- Replace cracked or loose sockets and switches before the inspection.
- Make sure the consumer unit, meter and every room are accessible.
- Have the previous report available so the inspector can identify circuits quickly.
FAQ
Questions
Does an old fuse box automatically fail?
No. A fuse box without RCD protection often leads to a C2 for socket circuits, but the box itself is not an automatic fail.
Can I fix the faults myself?
Most remedial work is notifiable or must be certified, so it should be done by a qualified electrician who can issue the right certificate.
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