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EICR codes explained

  • Writer: RJA Electrical Services
    RJA Electrical Services
  • Dec 21, 2025
  • 2 min read

According to the Government,


there are four classification codes that indicate the need for further Remedial Works.


Note: C1, C2, and FI require remedial work before the report can be marked as 'satisfactory'.
Note: C1, C2, and FI require remedial work before the report can be marked as 'satisfactory'.

Work required is classified using the following codes:

Keep in mind that after the inspections for the electrical certificate are complete, the electrician who assessed the property may need a few days to issue the electrical safety certificate, as it may take a few days to upload and calculate findings online.

  • C1 - Danger is present, risk of injury is likely and immediate action is required.


    In an EICR inspection, this is the code with the highest importance. If the problem is not fixed as quickly as feasible, there is a risk of electric shock or fire. Exposure of live electrical parts, damaged insulation, or broken light switches/plug sockets are all examples of C1 codes.


    To fix a C1 code, either the problem must be fixed or the relevant part/circuit must be isolated and turned off.


  • C2 - Potentially dangerous and remedial action is needed urgently.


    This indicates that while this defect is not immediately harmful in the same way that a C1 code is, it has the potential to become so in the future. The absence of mains-protected bonding or earthing, or an RCD that does not trip when tested, are examples of C2 codes.



  • C3 - Improvement to your electrical system is recommended.


    C3 is the only classification code that can appear on a report and still pass the EICR test.


    This indicates that this section of the installation does not comply with the wiring codes, although it poses no imminent hazard. Alternatively, enhancing it would improve the electrical installation's safety.


    Consider this code to be a MOT 'advisory note.' You are not required to get it repaired, but it is strongly suggested that you do so.


  • FI- Immediate further inquiry is necessary.


    This code indicates that the electrical engineer has detected a problem, but that further investigation is required. They will be able to evaluate the severity of the problem after they have done so.


Validity of the electrical certificate

Current guidelines state that for rental properties the EICR is legally required every 5 years but also recommends having the report renewed at the start of each new tenancy. For privately owned (owner-occupied) homes, it's recommended every 10 years.

Special rules apply to certain property types:

  • Caravans – every 3 years

  • Swimming pools – every 1 year

Landlords are also advised to renew the EICR at the start of each new tenancy, even if the 5-year period hasn't yet expired


Call now to book your EICR - 01795484115 or Email us: info@rjaelectricalservices.co.uk

 
 
 

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