BoilerFaultCodesIdeal C2 Fault Code
The Ideal C2 fault code means: your boiler has lost communication with its internal computer chip, meaning the main control board no longer recognizes the specific model it is supposed to be operating.. It appears on 35 Ideal models in our database.
Technical description: BCC Fault
What causes the Ideal C2 fault?
This fault occurs when the boiler's main control board loses the vital data connection to its identity chip, effectively 'forgetting' which model it is. The most common reason is a loose or failing Boiler Chip Card (BCC) that has vibrated out of place or suffered a small electrical surge that corrupted its memory.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
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A cover plan would handle faults like C2: no call-out fees, no surprise bills.
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Ideal models that show the C2 fault code
Click a model for the full fault code list and model-specific repair notes.
- Classic Repair: £150-300
- Combi I Repair: £150-300
- Exclusive Repair: £100-250
- i Mini Repair: £150-300
- Independent Repair: £150-250
- Instinct 24 Repair: £150-300
- Instinct 30 Repair: £150-300
- Instinct 35 Repair: £150-300
- Logic + Heat 12
- Logic + Heat 15
- Logic + Heat 18
- Logic + Heat 24
- Logic + Heat 30
- Logic + System 15
- Logic + System 18
- Logic + System 24
- Logic Code Combi Repair: £150-250
- Logic Code Combi ES26
- Logic Code Combi ES33
- Logic Code Combi ES38
- Logic Combi C24 C30 C35 Repair: £100-£350
- Logic Combi ES24
- Logic Combi ES30
- Logic Combi ES35
- Logic Combi ESP24
- Logic Combi ESP30
- Logic Combi ESP35
- Logic Heat 12
- Logic Heat 15
- Logic Heat 18
- Logic Heat 24
- Logic Heat 30
- Logic Max Combi Repair: £120-250
- Logic+ Repair: £120-£350
- Vogue Repair: £120-£280
Source
Ideal C2 fault code information on this page is sourced and cross-checked against the official Ideal service / installation manuals for each affected model.
- Ideal Instinct 35 manual (PDF)
- Ideal Logic + Heat 30 manual (PDF)
- Ideal Logic + System 24 manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 31 August 2026