How much does it cost to fix Baxi error code E168?

Typical repair cost for the Baxi E168 fault is £250-£450 including labour.

E168 High

Baxi E168 Fault Code

Q: What does the Baxi E168 fault code mean?

Your boiler's internal computer has encountered a memory or electrical glitch and has temporarily locked itself down to prevent safety issues.

The Baxi E168 fault code means: your boiler's internal computer has encountered a memory or electrical glitch and has temporarily locked itself down to prevent safety issues.. It appears on 24 Baxi models in our database.

Technical description: Printed circuit board (PCB) lockout error

What causes the Baxi E168 fault?

This fault occurs when the boiler's control board experiences a communication failure or an internal memory error, often caused by unstable electrical supply or aging components. It essentially means the boiler is 'confused' by inconsistent data and has shut down as a safety precaution to avoid operating unpredictably.

This fault is more common during winter months or stormy weather, as power surges, local grid fluctuations, and damp conditions can interfere with sensitive electrical components.

Typical repair cost £250-£450 (including labour)

DIY fix possible

Locate the selector switch on the front of the boilerTurn the switch to the 'R' (Reset) position and hold for 5 secondsRelease the switch and wait for the boiler to attempt a restart

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Baxi models that show the E168 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Baxi E168 fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026