Fisher & Paykel Oven Error Code E004

E004 is listed as an unused error code on these Fisher & Paykel oven models, meaning it is not assigned to any specific fault or component failure. Its appearance is itself the problem, most likely pointing to a control board issue rather than a failed sensor or heating component. It is not a code that reflects a normal operating fault, so it should not be ignored if it appears repeatedly.

Because E004 is an undefined code with no documented meaning, it is not possible to confirm whether normal oven operation is being affected or compromised. As a precaution, it is best to avoid using the oven until the code is resolved or a technician has confirmed the oven is operating safely.

If the issue resolves with a power cycle, there is no parts cost involved. If the control board requires replacement, parts and labor costs typically range from $200 to $500 or more depending on the specific model and local service rates. Getting a diagnostic assessment from a qualified technician before committing to a repair is recommended.

The first step you can take yourself is a full power cycle: switch off the oven at the circuit breaker or unplug it, wait at least five minutes, then restore power. If the code clears and does not return, a transient electrical disturbance was likely the cause. If it returns, the control board will need professional inspection or replacement.

A power cycle reset will clear the code if it was caused by a transient electrical event or a temporary control board glitch. However, if the control board has a deeper fault such as corrupted memory or a failing component, the code is likely to return after the reset. Persistent recurrence points to a hardware issue that requires parts or service.