Enter Whirlpool refrigerator diagnostic mode to read stored fault codes and run individual component tests. See the step-by-step entry sequence below. Diagnostic mode stores the last several error events so you can diagnose intermittent faults that clear between uses.
In the field, these codes are my best friend because Whirlpool refrigerators often hide intermittent issues. Instead of guessing why the fridge is warm, these stored faults tell me exactly which fan or thermistor acted up three days ago. It saves you from throwing parts at a problem. Just remember that a code doesn't always mean a dead part, sometimes it's just a loose connection or ice buildup blocking a fan.
WhirlpoolRefrigeratorSeverity: low
Time to Fix
5–30 min
Difficulty
beginner
Parts Cost
$0 (no parts needed)
Tools Needed
Phillips #2 screwdriver, Flathead screwdriver
Whirlpool Refrigerator Diagnostic Codes Explained
Think of these codes as a roadmap for your repair. While modern Whirlpool units are reliable, their control boards are sensitive to voltage drops and sensor drift. Before you start tearing out the evaporator cover, use this built-in service menu to confirm if you're dealing with a simple defrost failure or a more complex communication error between boards.
Most Likely Causes
Based on aggregated repair data, here is the probability breakdown for this error code:
Stored fault codes from recent error events40%
Need to confirm root cause before purchasing parts36%
Can you reset a Whirlpool refrigerator to clear the REFRIGERATOR-DIAG-CODES code?
Clearing these codes usually requires a hard power reset. I recommend pulling the plug for at least a full minute to let the capacitors on the main control board discharge completely. Once you plug it back in, the board reboots and starts a fresh monitoring cycle. If the fault is still present, the code will likely return within the first hour of operation.
Tools Required for Diagnosis
Phillips #2 screwdriverFlathead screwdriverDigital multimeterFlashlight or headlampPen and notepad to record codesVacuum with brush attachment for condenser coilsNut driver set (1/4" and 5/16")
Diagnostic Checklist
Follow these steps in order. We start with the easiest external fixes before opening up the machine.
Did the fix not work?
If the problem comes back after following these steps, a component has permanently failed and needs replacement. Check the specific error code your refrigerator is showing:
ConditionIf Open (OL) or infinite, replace component.
Frequently Asked Questions
What does Whirlpool refrigerator code E1 mean?
In my experience, an E1 code is almost always a failed defrost thermistor or a blown thermal fuse. When this sensor fails, the fridge doesn't know the evaporator coils are clogged with frost, so it never kicks on the heater. You'll eventually notice the fridge section getting warm while the freezer stays cold. Check the sensor resistance first, it should change as the temperature drops.
What does E5 mean on a Whirlpool refrigerator?
The E5 code means the freezer fan isn't moving air. I often find that ice buildup from a door left ajar has physically jammed the fan blades. Before buying a new motor, check for ice obstructions first. If the blades spin freely but the motor is silent during the diagnostic test, you've likely got a dead motor winding or a failed output from the control board.
What does E6 mean on a Whirlpool refrigerator?
E6 is specific to the condenser fan located next to the compressor. This fan is the unsung hero that keeps the whole system from overheating. If it stops, the compressor will get scorching hot and eventually shut down on its own internal safety. Check for pet hair or dust bunnies clogging the area before you assume the motor is shot.
Is the CF code serious on a Whirlpool refrigerator?
A CF code is a Condenser Fault and it's a bit of a catch-all. It usually triggers when the board detects the compressor is running too long without the temperature dropping. While it can be a fan issue, I often see this when the condenser coils are thick with dust. Give those coils a good vacuuming before you start testing the board or fan motor.
My refrigerator shows PO in diagnostic mode. Is that a problem?
Don't panic if you see PO. It stands for Power Outage. It's just the refrigerator's way of telling you the electricity cut out at some point. It's not a hardware failure. I see this a lot after a thunderstorm or if someone bumped the plug while cleaning. Just clear the code and carry on with your day.
How do I know if the code is a real failure or just a ghost fault?
Ghost faults are pretty common after a power surge or brownout, and honestly it's one of the first things I check. The way I tell the difference: clear the code by unplugging the fridge for a full minute, let it run for 24 hours, and then pull up diagnostics again. If the same code comes back on its own, you've got a real problem. If the board stays clean, it was probably just a blip from the power going weird. Don't waste money on parts until you've done this test first.
Can I run Whirlpool diagnostic mode with food still in the fridge?
Yeah, absolutely. The diagnostic mode doesn't change any temperatures or turn anything off, it just reads stored data and lets you run component tests. The only thing I'd watch is if you're running a fan test manually for more than a couple minutes, but even then you're probably fine. Totally safe to have food in there during the code-reading part. Just don't leave it in extended test mode for an hour while you go look up parts.