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Error code reference

Dacor Oven Error Code C43

Wire connection error at control and/or relay board-not all pin connectors from the wire harness are making contact with their respective terminals.

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What the C43 error code actually means

Your Dacor oven is showing an error because one or more of the electrical connectors inside the oven are not properly plugged in or making good contact. Think of it like a plug that is almost but not quite fully inserted into a socket. This is usually not a broken part situation, but rather a loose or improperly seated connection that needs to be found and corrected.

Diagnostic procedure

The full C43 procedure

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1
First diagnostic step
Check to make sure that all pins are seated properly into the Molex plug and that each connector is properly making contact with the correct terminal at the control and/or relay board.
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Most common causes of C43

Ranked by how often they cause this code
  1. 1Incompletely seated Molex pin
  2. 2Loose or disconnected harness connector at the board
  3. 3Corroded or oxidized pin terminals
  4. 4Bent or deformed pin
  5. 5Connector inserted into the wrong terminal port

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Questions people ask about C43

What does C43 mean on a Dacor oven?
C43 on a Dacor oven indicates a wire connection error between the control board and the relay board. The fault is triggered when one or more pins in the wire harness connectors are not making proper contact with their terminals. This is typically a physical connection issue rather than a failed board or component. Inspecting and reseating all Molex connectors at both boards is the recommended first step.
Is it safe to use my Dacor oven while the C43 code is displayed?
It is not advisable to continue using the oven while C43 is active. A faulty connection between the control and relay boards can result in unpredictable oven behavior, including incorrect temperature regulation or failure to control heating elements properly. The oven should be powered off and inspected before resuming normal use.
How much does it cost to repair a C43 error on a Dacor oven?
If the issue is simply a loose or improperly seated connector, repair costs may be minimal, covering only a service call fee which typically ranges from $75 to $150 depending on your region. If a damaged wire harness or connector housing needs to be replaced, parts and labor together could range from $150 to $400 or more. Because C43 often involves only a connection reseating rather than part replacement, it tends to be on the lower end of appliance repair costs.
Can I fix the C43 error myself, or do I need a technician?
A knowledgeable homeowner comfortable working inside appliances can attempt to fix C43 by carefully inspecting all wire harness connectors at the control and relay boards and reseating any that are loose or improperly inserted. However, if pins are bent or damaged, or if the connectors are difficult to access safely, a qualified appliance technician is the better choice. Always disconnect power to the oven before opening any panels.
Will resetting the oven clear the C43 error code?
Resetting the oven by cutting power at the breaker may temporarily clear the C43 code, but the error will return if the underlying connection issue is not corrected. The fault is caused by a physical wiring problem, not a software glitch, so the reset alone does not resolve it. The harness connectors at the control and relay boards must be inspected and properly seated for the fix to hold.

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