Code explanation
EICR C2 Code: Potentially Dangerous
A C2 on an EICR means potentially dangerous — no immediate danger, but a fault could make it dangerous. It requires urgent remedial action and fails the report.
A C2 classification means "Potentially dangerous — urgent remedial action required". There is no immediate danger under normal conditions, but the installation could become dangerous if a fault occurred or conditions changed.
What a C2 typically covers
- Missing RCD protection where it is now required for shock protection.
- Inadequate earthing or bonding that would matter under fault conditions.
- Deteriorated insulation approaching, but not yet at, a dangerous state.
What must happen
- Arrange urgent remedial action by a competent person.
- A C2 makes the report Unsatisfactory — the same overall outcome as a C1, even though the immediate risk is lower.
Why C2 is taken seriously
The "potentially" in potentially dangerous does not mean optional. It means the safety margin has been eroded and a single fault could expose people to danger. Treat C2 items promptly. To understand the boundary with less serious observations, see C2 vs C3.
Frequently asked questions
How quickly must a C2 be fixed?
A C2 requires urgent remedial action. For rented homes in England, the required work must be completed within 28 days (or sooner if the report specifies) and written confirmation supplied to the tenant and local authority.
Related service
C1, C2 & FI Remedials
Targeted rectification of dangerous and potentially dangerous observations, prioritised by risk.
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Code explanation
EICR C1 Code: Danger Present
A C1 on an EICR means danger is present and a risk of injury exists. It requires immediate action and always makes a report Unsatisfactory.
Learn moreComparison
Difference Between C1 and C2 on an EICR
C1 means danger is present now and requires immediate action; C2 means potentially dangerous — safe now but a fault could make it dangerous. Both fail an EICR.
Learn moreComparison
Difference Between C2 and C3 on an EICR
C2 is potentially dangerous and fails an EICR, requiring urgent remedial work; C3 is a non-urgent improvement recommendation that keeps the report Satisfactory.
Learn moreCode explanation
EICR C3 Code: Improvement Recommended
A C3 on an EICR means improvement recommended — not dangerous and not a fail. Addressing C3 items is good practice but not legally required.
Learn moreThis article provides general guidance and distinguishes legislation, British Standards and good practice. It is not legal advice. Always confirm the specific duties applying to your property and tenure.