What does the Baxi E133 fault code mean?
The Baxi E133 fault code indicates a gas supply fault or ignition failure, which means the boiler is unable to ignite due to a problem with the gas supply. This can prevent the boiler from heating water or providing central heating.
Common Causes
- Gas Supply Issue: There may be a blockage or interruption in the gas supply line, preventing gas from reaching the boiler.
- Ignition Electrode Fault: The ignition electrode may be dirty or faulty, failing to create the spark needed to ignite the gas.
Can I fix it myself? (DIY)
If you suspect a gas supply issue, it is essential to contact a Gas Safe Engineer, as working with gas can be dangerous. Do not attempt to fix ignition problems yourself, as this requires professional expertise.
Estimated Repair Cost (2026 UK Prices)
Repair costs for the E133 fault code can vary. If the issue is a faulty ignition electrode, replacement parts typically range from £50 to £100, with labor costs around £80 to £120, leading to a total estimated cost of £130 to £220. If the gas supply line needs attention, costs can increase significantly depending on the extent of the work required.