F0 238 High
Your boiler's internal computer memory chip has developed a fault, preventing the system from identifying itself and operating safely.
Technical description: The burner control unit KIM (boiler identification module) is faulty
Typical repair cost: £180-£350 (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 F0 238 — no call-out fees, no surprises.
*Affiliate links — we may earn a commission at no extra cost to you. Prices shown are starting prices.
Parts commonly replaced
- KIM (Boiler Identification Module)
- MCB (Main Control Board)
*Affiliate links — we may earn a commission at no extra cost to you.