What does Baxi E119 mean?

Low water pressure — system pressure has fallen below the safe minimum.

How do I fix Baxi E119?

Try first: Top up the pressure using the filling loop to about 1.2 bar; If it won't hold, there's usually a leak or a failed expansion vessel. If that doesn't clear it, the likely part is Expansion vessel.

Baxi E119 Fault — What It Means & Fix Cost

⚠ This is the likely cause from the code — a Gas Safe registered engineer confirms it on site. If you can smell gas, stop and ring 0800 111 999.

✅ Try these first — they're free

Often clears it without a callout:

Top up the pressure using the filling loop to about 1.2 bar
If it won't hold, there's usually a leak or a failed expansion vessel

🔧 If that doesn't fix it

The likely cause is one of these — the engineer confirms which:

Pressure dropped
Leak
Expansion vessel

Most likely part: Expansion vessel

⚠ Worth knowing

A vessel that's lost its charge is the usual reason a top-up doesn't hold

Fixed repair price

£150

Part + labour, no surprise callout fee. You only pay if you go ahead.

Book a Gas Safe engineer

You pick from the 3 nearest vetted engineers. Your choice gets first refusal; if they don't take it within a few hours it moves to the next nearest automatically — and we keep you posted.

Other Baxi fault codes

Baxi E133Ignition lockout / gas supply fault — the boiler failed to l…

Baxi E119 — what it means

✅ Try these first — they're free

🔧 If that doesn't fix it

⚠ Worth knowing

Other Baxi fault codes