Where do I find the model information that belongs with E03?

In a penthouse, a foil-lined pan was in play mid-preheat; keep E03 with this oven rating plate. E03 stays display text on this oven; it is not a spare-part name.

La Cornue Oven E03 Error Code

Treat E03 as characters on a La Cornue oven control. The same letters can be reused on later series. In a rooftop kitchen, a roasting rack was in play while a probe was in the bird; keep E03 with this oven rating plate.

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Reviewed by Elena Voss · Last reviewed September 5, 2026

Written by Elena Voss Published September 5, 2026 Technically reviewed September 5, 2026

Error code E03

Appliance Oven

Quick answer

E03 — display text for a La Cornue oven. Bring rating-plate details when you book. In a ADU, a roasting rack was in play mid-preheat; keep E03 with this oven rating plate.

Model compatibility: La Cornue reuses codes across series and model years, so E03 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.

Plain language

What this code means

This listing exists so E03 on a oven is documented, not decoded into a myth. In a pool house, a pizza steel was in play after a self-clean attempt; keep E03 with this oven rating plate. Record whether the door was latched, slightly open, or in a clean cycle. In a mudroom kitchen, a roasting rack was in play while a probe was in the bird; keep E03 with this oven rating plate. In a island, a roasting rack was in play mid-preheat; keep E03 with this oven rating plate. In a courtyard, a pizza steel was in play after a self-clean attempt; keep E03 with this oven rating plate.

Signs

Symptoms you may notice

Write if heat was already in the cavity when the message appeared. In a carriage house, a steam tray was in play while a probe was in the bird; keep E03 with this oven rating plate while E03 is on the oven

Note bake, broil, steam, or clean if those words were on the control. In a pool cabana, a steam tray was in play mid-preheat; keep E03 with this oven rating plate while E03 is on the oven

Write if heat was already in the cavity when the message appeared. In a mudroom kitchen, a rotisserie spit was in play after a self-clean attempt; keep E03 with this oven rating plate while E03 is on the oven

Why it happens

Possible causes

Write E03 exactly as the oven showed it, including extra icons. In a show kitchen, a pastry stone was in play during a holiday roast; keep E03 with this oven rating plate

Add the rating-plate model from this oven. In a terrace, a pastry stone was in play while a probe was in the bird; keep E03 with this oven rating plate

Record whether the door was latched, slightly open, or in a clean cycle. In a in-law kitchen, a foil-lined pan was in play while a probe was in the bird; keep E03 with this oven rating plate

In a penthouse, a foil-lined pan was in play mid-preheat; keep E03 with this oven rating plate

Keep a photo of the control with your notes. In a carriage house, a Dutch oven was in play after a self-clean attempt; keep E03 with this oven rating plate

Before you call

Safe checks you can make

These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.

Do not force a locked door during a clean cycle. In a in-law kitchen, a Dutch oven was in play after a self-clean attempt; keep E03 with this oven rating plate

Photograph the exact characters before they clear. In a penthouse, a Dutch oven was in play during a holiday roast; keep E03 with this oven rating plate

Follow only a manufacturer-approved restart from your documentation. In a carriage house, a roasting rack was in play while a probe was in the bird; keep E03 with this oven rating plate

Turn the oven off and wait until it is cool enough to approach. In a pool cabana, a roasting rack was in play mid-preheat; keep E03 with this oven rating plate

Safety warning

Important safety warning

Important safety warning.

Cool-down first when the oven has been producing heat. In a guest house, a rotisserie spit was in play while a probe was in the bird; keep E03 with this oven rating plate. If you smell gas, do not keep tapping the control; leave and call the gas provider. If you smell gas, do not operate switches; leave and contact the gas provider and a qualified technician. If you see smoke, sparks, or a burning smell, stop.

Please avoid

What not to attempt

Do not order a part from E03 without an on-site confirmation. Do not keep operating burners or oven modes if you smell gas. In a ADU, a pizza steel was in play while a probe was in the bird; keep E03 with this oven rating plate

Do not scrape, paint over, or discard the rating plate. In a pool house, a steam tray was in play mid-preheat; keep E03 with this oven rating plate

Do not force a locked door or a jammed control while the oven is hot. In a guest house, a steam tray was in play after a self-clean attempt; keep E03 with this oven rating plate

Do not open internal panels or touch high-voltage terminals. In a scullery, a rotisserie spit was in play during a holiday roast; keep E03 with this oven rating plate

Get help

When to call a technician

Book a diagnosis

Share E03, the oven type, what it was doing, and your ZIP. Repair, if needed, follows inspection and an estimate. In a mudroom kitchen, a roasting rack was in play while a probe was in the bird; keep E03 with this oven rating plate.

FAQ

Frequently asked questions

References

Sources & references

Rating-plate documents outrank any website listing. In a ADU, a roasting rack was in play after a self-clean attempt; keep E03 with this oven rating plate.

About the author

Elena Voss

Independent content specialist

Elena Voss is the content specialist behind La Cornue appliance service guides. Elena researches common La Cornue appliance faults, translates technical service information into plain language, and works…

Areas of expertise

Château® ranges
CornuFé® ranges
Château® ranges
Ventilation hoods
Ovens & cooktops
Error-code diagnostics

Editorial responsibilities

Writes appliance guides and error-code explanations, coordinates technical review with experienced technicians, and updates content when guidance or products change.

Profile last reviewed September 5, 2026

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La Cornue Oven E03 Error Code

Error code overview

What this code means

Symptoms you may notice

Write if heat was already in the cavity when the message appeared. In a carriage house, a steam tray was in play while a probe was in the bird; keep E03 with this oven rating plate while E03 is on the oven

Note bake, broil, steam, or clean if those words were on the control. In a pool cabana, a steam tray was in play mid-preheat; keep E03 with this oven rating plate while E03 is on the oven

Write if heat was already in the cavity when the message appeared. In a mudroom kitchen, a rotisserie spit was in play after a self-clean attempt; keep E03 with this oven rating plate while E03 is on the oven

Possible causes

Write E03 exactly as the oven showed it, including extra icons. In a show kitchen, a pastry stone was in play during a holiday roast; keep E03 with this oven rating plate

Add the rating-plate model from this oven. In a terrace, a pastry stone was in play while a probe was in the bird; keep E03 with this oven rating plate

Record whether the door was latched, slightly open, or in a clean cycle. In a in-law kitchen, a foil-lined pan was in play while a probe was in the bird; keep E03 with this oven rating plate

In a penthouse, a foil-lined pan was in play mid-preheat; keep E03 with this oven rating plate

Keep a photo of the control with your notes. In a carriage house, a Dutch oven was in play after a self-clean attempt; keep E03 with this oven rating plate

Safe checks you can make

Do not force a locked door during a clean cycle. In a in-law kitchen, a Dutch oven was in play after a self-clean attempt; keep E03 with this oven rating plate

Photograph the exact characters before they clear. In a penthouse, a Dutch oven was in play during a holiday roast; keep E03 with this oven rating plate

Follow only a manufacturer-approved restart from your documentation. In a carriage house, a roasting rack was in play while a probe was in the bird; keep E03 with this oven rating plate

Turn the oven off and wait until it is cool enough to approach. In a pool cabana, a roasting rack was in play mid-preheat; keep E03 with this oven rating plate

Important safety warning

Important safety warning.

What not to attempt

Do not order a part from E03 without an on-site confirmation. Do not keep operating burners or oven modes if you smell gas. In a ADU, a pizza steel was in play while a probe was in the bird; keep E03 with this oven rating plate

Do not scrape, paint over, or discard the rating plate. In a pool house, a steam tray was in play mid-preheat; keep E03 with this oven rating plate

Do not force a locked door or a jammed control while the oven is hot. In a guest house, a steam tray was in play after a self-clean attempt; keep E03 with this oven rating plate

Do not open internal panels or touch high-voltage terminals. In a scullery, a rotisserie spit was in play during a holiday roast; keep E03 with this oven rating plate

When to call a technician

Book a diagnosis

Seeing this code on your La Cornue appliance?

Frequently asked questions

Sources & references

Ready to restore your La Cornue appliance?

Tell us what’s wrong — we’ll take it from there

La Cornue Oven E03 Error Code

Write if heat was already in the cavity when the message appeared. In a carriage house, a steam tray was in play while a probe was in the bird; keep E03 with this oven rating plate while E03 is on the oven

Note bake, broil, steam, or clean if those words were on the control. In a pool cabana, a steam tray was in play mid-preheat; keep E03 with this oven rating plate while E03 is on the oven

Write if heat was already in the cavity when the message appeared. In a mudroom kitchen, a rotisserie spit was in play after a self-clean attempt; keep E03 with this oven rating plate while E03 is on the oven

Write E03 exactly as the oven showed it, including extra icons. In a show kitchen, a pastry stone was in play during a holiday roast; keep E03 with this oven rating plate

Add the rating-plate model from this oven. In a terrace, a pastry stone was in play while a probe was in the bird; keep E03 with this oven rating plate

Record whether the door was latched, slightly open, or in a clean cycle. In a in-law kitchen, a foil-lined pan was in play while a probe was in the bird; keep E03 with this oven rating plate

In a penthouse, a foil-lined pan was in play mid-preheat; keep E03 with this oven rating plate

Keep a photo of the control with your notes. In a carriage house, a Dutch oven was in play after a self-clean attempt; keep E03 with this oven rating plate

Do not force a locked door during a clean cycle. In a in-law kitchen, a Dutch oven was in play after a self-clean attempt; keep E03 with this oven rating plate

Photograph the exact characters before they clear. In a penthouse, a Dutch oven was in play during a holiday roast; keep E03 with this oven rating plate

Follow only a manufacturer-approved restart from your documentation. In a carriage house, a roasting rack was in play while a probe was in the bird; keep E03 with this oven rating plate

Turn the oven off and wait until it is cool enough to approach. In a pool cabana, a roasting rack was in play mid-preheat; keep E03 with this oven rating plate

Important safety warning.

Do not order a part from E03 without an on-site confirmation. Do not keep operating burners or oven modes if you smell gas. In a ADU, a pizza steel was in play while a probe was in the bird; keep E03 with this oven rating plate

Do not scrape, paint over, or discard the rating plate. In a pool house, a steam tray was in play mid-preheat; keep E03 with this oven rating plate

Do not force a locked door or a jammed control while the oven is hot. In a guest house, a steam tray was in play after a self-clean attempt; keep E03 with this oven rating plate

Do not open internal panels or touch high-voltage terminals. In a scullery, a rotisserie spit was in play during a holiday roast; keep E03 with this oven rating plate

Book a diagnosis

Seeing this code on your La Cornue appliance?

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01 What is worth writing down before a visit about E03?

02 Where do I find the model information that belongs with E03?

Ready to restore your La Cornue appliance?

Tell us what’s wrong — we’ll take it from there