0D High
Your boiler has detected an internal communication error and has shut itself down as a safety precaution.
Technical description: Burner control switches to lockout
Typical repair cost: £180-450 (including labour)
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Protect yourself from future repair bills
A boiler cover plan would cover faults like 0D — no call-out fees, no surprises.
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Parts commonly replaced
- Burner Control Unit
- Ignition Lead
- Main PCB
*Affiliate links — we may earn a commission at no extra cost to you.