EICR fault codes are critical for understanding the condition of an electrical installation and making the right safety decisions. In an Electrical Installation Condition Report (EICR), each fault code has a clear meaning. A C1 code highlights an immediate electrical danger that poses a direct risk; this normally requires power to be isolated and emergency remedial work carried out straight away. A C2 fault indicates a potentially dangerous issue (e.g., poor earthing or exposed metal parts), and urgent action is required to remove the risk. A C3 code is classed as “improvement recommended”, not legally mandatory, but suggested to raise safety standards and bring the installation closer to current BS 7671 wiring regulations. The FI code (“further investigation”) indicates that additional testing is required to determine the root cause before any decision or repair can be made.
Key Takeaways
- EICR fault codes classify electrical faults such as C1 (immediate danger) and C2 (potential danger).
- C1 code requires urgent action due to immediate safety threats, necessitating power disconnection and immediate repairs.
- C2 code indicates a need for prompt remedial action to prevent future hazards, though not immediately dangerous.
- C3 code suggests improvements for safety and efficiency, but it isn’t mandatory, while the FI code necessitates further investigation.
- Complying with EICR codes is crucial for adhering to safety standards, which affect property transactions and landlords’ legal obligations.
Table of Contents
Understanding EICR Fault Codes
EICR fault codes are used by qualified electrical inspectors to classify the safety status of a property’s electrical installation during an Electrical Installation Condition Report (EICR).
These codes identify electrical faults, highlight the level of risk associated with each issue, and help landlords, property owners, and duty holders determine whether urgent remedial work is required.
EICR Fault Codes Explained
EICR fault codes are used in Electrical Installation Condition Reports to show how serious an electrical defect is and what action is required. These codes help landlords and property owners understand the safety status of their electrical installation and ensure compliance with BS 7671 Wiring Regulations.
What Each Code Means
- C1 – Danger Present: Immediate action required, often power isolation.
- C2 – Potentially Dangerous: Urgent remedial work needed to remove risk.
- C3 – Improvement Recommended: Not mandatory, but advised to enhance safety.
- FI – Further Investigation: More testing required to determine the fault.
Why They Matter
Correct interpretation of EICR fault codes prevents unnecessary repairs and ensures genuine hazards are dealt with properly. Understanding these codes helps maintain compliance, protect tenants, and reduce the risk of electrical fires or accidents.
Importance of EICR Codes in Electrical Safety
Understanding EICR fault codes is crucial for maintaining electrical safety and compliance in residential and commercial properties. These codes, used within an Electrical Installation Condition Report (EICR), help identify defects against UK wiring regulations and highlight the level of risk associated with each fault.
By clearly classifying issues such as “danger present” or “potentially dangerous,” EICR codes guide engineers in prioritising remedial works to prevent electrical shocks, failures, or fires. Proper interpretation of these fault codes not only ensures regulatory compliance but also supports proactive maintenance, reducing future hazards and protecting both property and occupants.

What Does a C1 Code Indicate?
A C1 code in an Electrical Installation Condition Report (EICR) confirms that immediate danger is present within the electrical installation. This means the defect identified poses a direct and serious risk to life, such as exposed live parts, damaged cables, or faulty protective devices. When a C1 is found, the installation is considered unsafe to continue using in its current condition, and the electrician must take instant steps to make the situation safe. This may include isolating circuits or disconnecting the power supply.
The C1 code’s implications are severe; they indicate that the property’s and its occupants’ safety are compromised. Examples of C1 faults include exposed live parts due to damaged insulation, water in electrical components, or severe overheating of wiring, as evidenced by discoloured or melted insulation. Check the EICR C1 meaning to understand its impact on the tenancy.
Why a C2 Code Matters in an EICR Report
A C2 code in an Electrical Installation Condition Report identifies a potentially dangerous electrical defect that could become a serious hazard if not rectified. Although the risk may not be immediate like a C1, it still requires urgent remedial action to prevent electric shock, overheating, or fire. Common examples include inadequate earthing, undersized cables, or exposed conductive parts.
Addressing C2 faults promptly ensures the installation remains compliant with BS 7671 wiring regulations, improves overall electrical safety, and reduces the chance of future failures or safety incidents.
Instances of the C2 code include inadequate earthing or bonding and outdated wiring that doesn’t comply with current safety standards.
EICR C2 code rectification involves correcting the faults identified to prevent any future risks. These remediations must be carried out swiftly to guarantee the electrical system’s ongoing safety and functionality.
What Does the C3 Code Mean in an EICR?
A C3 code in an Electrical Installation Condition Report (EICR) means “improvement recommended.” This fault code does not indicate immediate danger and does not make the installation unsafe, but it suggests that upgrades could enhance electrical safety and bring the system closer to current BS 7671 standards.
The issuance of an EICR C3 code suggests that while the existing configurations comply with safety standards, they could benefit from modernisation or upgrading to elevate safety margins and operational efficiency.
C3 recommendations often relate to older installations that still function safely but could benefit from modern improvements, such as upgrading protective devices, labelling circuits correctly, or fitting RCD protection. While not legally required, completing C3 improvements can help reduce future risks, prolong the life of the installation, and support better long-term compliance.
What Does the FI Code Mean in an EICR?
The FI code in an EICR means Further Investigation is required. It indicates a potential issue that could not be fully confirmed during the inspection and needs additional testing to identify the exact risk. This code should be addressed promptly to ensure the installation remains compliant and safe.
The assignment of an FI code triggers specific investigation procedures designed to diagnose and rectify these latent issues. The process involves more detailed scrutiny by a qualified electrical professional, employing advanced diagnostic tools and methods. It’s imperative to understand that the FI code implications are serious, warranting immediate and thorough attention to prevent potential hazards.
| Aspect | Detail |
| Objective | Identify hidden or complex issues |
| Tools Used | Advanced diagnostic instruments |
| Outcome | Detailed report recommending solutions |
Common Issues That Trigger EICR Fault Codes
In Electrical Installation Condition Reports (EICR), fault codes such as C1, C2, and C3 signify varying degrees of risk and urgency in electrical systems.
EICR fault codes are usually raised due to electrical defects such as damaged or exposed wiring, outdated consumer units, poor earthing or bonding, overloaded circuits, missing RCD protection, or incorrectly installed accessories.
These issues increase the risk of electric shock or fire and must be identified and corrected to ensure the electrical installation remains safe and compliant.

Legal Obligations in London
In London, the legal framework governing Electrical Installation Condition Reports (EICRs) places specific obligations on landlords and homeowners.
Landlords are mandated to guarantee that EICR assessments are conducted every five years or at each change of tenancy, with the reports adhering to the BS 7671 standards to confirm electrical safety compliance.
For homeowners, maintaining compliance with EICR requirements is essential not only for safety but also to meet the stipulations of home insurance policies and local housing regulations.
Landlord Responsibilities Regarding EICR Codes
Landlords in London are legally obligated to guarantee that the electrical installations in their rental properties are safe and properly maintained, as stipulated by the Electrical Installation Condition Report (EICR) regulations.
This guarantees not only the safety of tenants but also compliance with local housing standards. Understanding and adhering to these regulations is paramount for landlords to meet their legal duties and avoid potential penalties.
Here are key responsibilities that London landlords must fulfil under the EICR standards:
- Periodic Inspections: Verify that electrical installations are inspected and tested by a qualified electrician at least every five years or more frequently as recommended.
- Addressing Faults: Promptly rectify any electrical faults or deficiencies identified in the EICR to guarantee ongoing tenant safety and electrical compliance.
- Documentation: Maintain up-to-date records of all electrical inspections, including the EICR, to provide proof of compliance.
- Inform Tenants: Notify tenants of upcoming inspections and provide them with access to the EICR results.
- Compliance Updates: Stay informed about any changes in legislation or standards related to electrical safety to guarantee continued compliance.
Adhering to these practices not only fulfils landlord obligations but also greatly enhances tenant safety and property standards.
Compliance Requirements for Homeowners
How are homeowners in London affected by compliance requirements pertaining to electrical safety? The Electrical Safety Standards in the Private Rented Sector (England) Regulations 2020 extend certain obligations to homeowners, particularly those who intermittently rent out their properties. Homeowners must guarantee that their electrical installations are inspected and tested by a qualified person at least every five years. Suppose deficiencies are identified via an Electrical Installation Condition Report (EICR). In that case, these must be rectified promptly to comply with the current electrical safety standards.
| Requirement | Compliance Deadline | Penalty for Non-compliance |
| Initial EICR | Prior to tenancy or every 5 years | Up to £30,000 fine |
| Remedial Work | Within 28 days of EICR | Escalation to local authorities |
| Documentation | Must be provided to the tenant | Legal disputes & potential fines |
Failure to comply can lead to substantial compliance penalties, reinforcing the importance of homeowner responsibilities in maintaining safety standards. Homeowners must be proactive in updating their electrical systems and adhering to these regulations to avoid legal repercussions and guarantee the safety of all occupants. This adherence not only mitigates the risk of penalties but also enhances property integrity and safety.
Impact of EICR Findings on Property Valuation
Examining the Electrical Installation Condition Report (EICR) findings reveals significant implications for property valuation, particularly when properties are being prepared for sale. The EICR’s role in evaluating electrical safety can directly influence the market value assessment, thereby affecting the overall financial metrics of real estate transactions.
Here are essential ways EICR findings impact property valuation:
- Identification of Electrical Hazards: Fault codes indicating potential safety risks can lead to downward adjustments in property values unless rectified.
- Compliance with Regulations: Properties failing to meet electrical safety standards may be deemed non-compliant, reducing their attractiveness to informed buyers.
- Impact on Insurance Premiums: Properties with poor EICR ratings may attract higher insurance premiums, influencing buyer perception and the total cost of ownership.
- Investment Requirement: An EICR’s highlight of the need for electrical upgrades and repairs can deter buyers from seeking turnkey solutions, impacting demand and value.
- Future Proofing: An excellent EICR score can enhance property appraisal factors by ensuring that the electrical systems meet current and anticipated standards, making the property more appealing to prospective buyers.
Understanding these electrical inspection implications is vital for accurate property appraisal and strategic market positioning.

The Severity Levels of EICR Fault Codes
In the context of Electrical Installation Condition Reports (EICR), fault codes are classified by their urgency and potential risk to safety.
Code C1 is considered critical as it represents a condition likely to cause immediate danger to property or human life.
Understanding the implications of Code C2, which indicates potentially dangerous conditions requiring prompt attention, and Code C3, which suggests improvements that, while not immediately hazardous, could markedly enhance safety, is essential for compliance and safety assurance.
What Makes Code C1 Critical?
Code C1 in the Electrical Installation Condition Report (EICR) is designated as the most severe fault code, indicating an immediate danger to property and personal safety. This classification underscores the urgency of addressing such faults without delay to mitigate risks effectively.
Understanding the vital nature of Code C1 involves recognising its immediate implications and the required interventions:
- Presence of Live Exposed Parts: C1 indicates that live parts are accessible, which could lead to direct contact and a high risk of electric shock or burns.
- Risk of Fire: Faults classified as C1 can appreciably increase the risk of electrical fires due to short circuits or overheating of electrical components.
- C1 Fault Implications: The existence of a C1 fault suggests a failure in protective measures, necessitating immediate corrective actions to restore safety.
- C1 Risk Assessment: Professionals must prioritise these faults in their risk assessments, ensuring that such hazards are rectified before the system is put back into service.
- C1 Safety Measures: Implementing stringent safety measures and remedial actions is essential to address the identified dangers and safeguard both individuals and property.
In-depth knowledge and immediate action are paramount when dealing with C1 faults to prevent severe consequences.
Why Code C2 Requires Urgent Action
While Code C1 denotes immediate danger, Code C2 is also essential, signifying potential risks that necessitate prompt attention to prevent the situation from escalating into a more severe or hazardous condition.
Code C2 is assigned during Electrical Installation Condition Reports (EICR) when the electrical systems show signs that could become hazardous if left unattended. These aren’t immediate threats to property or personal safety, but they could evolve into serious issues if not addressed with urgency.
Understanding C2 implications requires an in-depth exploration of the specifics of the electrical fault. It typically involves situations where, for example, insulation resistance is below recommended levels but has not yet reached a significant failure point.
The urgency of C2 repairs stems from the potential for rapid deterioration, which could lead to safety hazards such as electrical shocks or fires.
Therefore, safety prioritisation is critical, and urgent repairs are recommended to mitigate these risks. By addressing C2 concerns promptly, we not only guarantee compliance with safety standards but also extend the lifespan of the electrical installation.
Attending to C2 issues is about proactive prevention, which is fundamental in maintaining a safe and functional electrical infrastructure.
Is Code C3 Optional or Necessary?
Understanding the significance of Code C3 within the Electrical Installation Condition Report (EICR) is essential for evaluating its necessity in maintaining electrical safety.
Code C3 indicates that the inspected electrical conditions are acceptable but recommends optional improvements for enhanced safety and efficiency. This code does not imply immediate danger but suggests potential enhancements that could preempt future issues.
While C3 is not a mandatory corrective action, its implications for long-term safety and operational efficiency should not be underestimated:
- Enhanced Safety: Addressing C3 recommendations can reduce the risk of future hazards.
- Preventative Measures: Proactively upgrading systems can prevent the degradation that might lead to serious faults.
- Cost Efficiency: Early improvements can be more cost-effective compared to future major repairs.
- Property Value: Upgraded electrical installations can increase property value and appeal.
- Compliance and Standards: Keeping up with evolving standards and regulations, even when not immediately mandatory.

Responsibilities of Landlords in Fixing Fault Codes
Landlords bear significant responsibilities when it comes to addressing fault codes identified in an Electrical Installation Condition Report (EICR). Ensuring the safety and compliance of electrical installations not only protects tenants but also aligns with the landlord’s legal obligations.
Failure to act on an EICR‘s findings can lead to severe legal repercussions, including fines and invalidated property insurance.
To effectively manage EICR fault codes, landlords must adhere to strict repair timelines and uphold tenant rights. Detailed below are key points landlords should follow:
- Immediate Action on C1 ‘Danger Present’ Faults: These require urgent attention as they pose a direct threat to tenant safety. Landlords must rectify these faults immediately, often within 24 hours, to prevent harm.
- Timely Resolution of C2 ‘Potentially Dangerous’ Faults: C2 faults should be addressed promptly, typically within 28 days, to mitigate any risks before they escalate.
- Regular Updates to Tenants: Communication with tenants about the status of repairs and expected timelines helps maintain transparency and trust.
- Compliance with Legal Standards: Ensuring all electrical repairs and installations meet the current BS 7671 requirements.
- Documentation and Record Keeping: Maintaining detailed records of all EICR findings and the repairs undertaken is essential for both legal protection and future inspections.
Frequently Asked Questions
Can DIY Electrical Work Cause EICR Faults?
DIY electrical work often leads to faults due to common mistakes and overlooked DIY dangers, compromising electrical safety. Inaccurate installations and failure to adhere to technical standards frequently result in significant safety hazards.
Are EICR Fault Codes Different in Scotland and Wales?
Charting the landscape of EICR regulations reveals varied terrain: Scotland’s standards and Wales’ guidelines differ subtly, reflecting regional legislative nuances. This divergence necessitates meticulous adherence to localised codes for electrical compliance and safety.
What Happens if EICR Faults Are Ignored?
Ignoring electrical faults can lead to severe safety implications, including increased risk of fire and electrocution. The long-term effects often result in substantial repair costs. They could legally constitute consequences of negligence in maintaining safe environments.
Do EICR Codes Apply to Commercial Properties?
Yes, EICR requirements apply to commercial properties, mandating regular commercial inspections to guarantee electrical compliance. Adherence to these standards is essential for safety and legal conformity in business environments.
Can Tenants Request an EICR Inspection?
Tenants hold the right to request an EICR inspection to guarantee electrical safety in their leased properties. Proper inspection requests help uphold tenant rights, contributing to their peace of mind and safety compliance.


