mypros+
Error code reference

Wolf Range Error Code 07-38

MDL circuitry error.

Avg. service call
$285
National average. Trip fee plus diagnostic plus labor. Before parts.
MyPros+ 3-day pass
$9.95
Same diagnostic steps, on your phone. Start now.
You keep in your pocket
~$275
Even before you buy the part.
Skip the service call. Fix it yourself.
Full procedure unlocks instantly.
Get Started

What the 07-38 error code actually means

Your Wolf range has detected a problem with an internal electronic module that controls how power is switched to the burners or oven. This is essentially the range telling you that a key circuit board component is not working correctly. A technician will need to inspect the wiring and likely replace the faulty module to get the range working again.

Diagnostic procedure

The full 07-38 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check connections, replace Relay Module.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
Unlock 07-38 procedure $9.95

Or subscribe: $29/month for unlimited access to all codes plus Max AI diagnostics.

Most common causes of 07-38

Ranked by how often they cause this code
  1. 1Loose or damaged wiring connections
  2. 2Failed Relay Module
  3. 3Damaged wiring harness
  4. 4Intermittent connector contact

Most DIYers save hundreds by diagnosing before ordering parts.

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass

Questions people ask about 07-38

What does 07-38 mean on a Wolf range?
Error code 07-38 on a Wolf range indicates a fault in the MDL circuitry, which is associated with the Relay Module. The Relay Module controls the switching of power to components like burners and oven elements. This code means the control system has detected an irregularity in that module's circuitry and has flagged it for service. The first step is to check all wiring connections to the module, followed by replacement of the Relay Module if needed.
Is it safe to use my Wolf range while error 07-38 is displayed?
It is not recommended to continue using the range while error 07-38 is active. The fault indicates a problem in the circuitry that controls power switching to cooking components, which could lead to unpredictable operation or unsafe conditions. Discontinue use and have the range inspected by a qualified technician before operating it again.
How much does it cost to repair error 07-38 on a Wolf range?
Repair costs for error 07-38 will vary depending on whether the fix requires only connection service or a full Relay Module replacement. Labor charges for a qualified technician typically range from moderate to significant depending on your region and service provider. The Relay Module part itself adds to the cost if replacement is needed. Total repair costs can generally range from around 150 dollars to 400 dollars or more depending on parts and labor rates in your area.
Can I fix error 07-38 on my Wolf range myself?
A knowledgeable DIYer can start by visually inspecting and reseating the wiring connections to the Relay Module with the unit fully powered off and unplugged. However, because this fault involves high-voltage relay switching circuits, replacing the Relay Module itself is best handled by a qualified appliance technician. Attempting internal repairs without proper training on high-voltage appliances carries a serious safety risk.
Will resetting my Wolf range clear error code 07-38?
Resetting the range by cycling the power may temporarily clear the display, but if the underlying fault in the MDL circuitry or Relay Module has not been corrected, the error code will return. A reset is useful for confirming whether the fault is intermittent or persistent, but it is not a repair. The connections and module need to be properly evaluated to resolve the issue.

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass