mypros+
Error code reference

Whirlpool Refrigerator Error Code PO

Power outage indicator

Whirlpool codesWhirlpool refrigerator codes

Power outage indicator - the power supply to the refrigerator was cut off and the freezer temperature rose to 18°F (-8°C) or higher.

First step from the service manual

Press the MEASURED FILL button to confirm and clear the indicator.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

MyPros+ Max

Get the full diagnostic procedure for PO.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

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

What PO means on a Whirlpool refrigerator

The PO code on a Whirlpool refrigerator is a power outage indicator, not a fault code tied to a mechanical failure. It activates when the refrigerator detects that its power supply was interrupted and the freezer compartment temperature climbed to 18°F (-8°C) or above during that interruption. The control board monitors freezer temperature and logs this threshold breach so the user is aware that frozen food may have been exposed to unsafe temperatures while the unit was without power.

This indicator is purely informational and serves as a food safety alert. The refrigerator itself is not malfunctioning when PO appears. The display holds this notification until the user actively acknowledges it, because the temperature excursion could affect the safety and quality of frozen food stored inside the unit. The 18°F (-8°C) threshold is significant because it indicates the freezer moved well above the standard 0°F (-18°C) target storage temperature.

Clearing the code is straightforward: pressing the MEASURED FILL button confirms that the user has seen the alert and resets the indicator. Before clearing, inspect the contents of the freezer for signs of partial or complete thawing, such as ice crystals melting, liquid pooling, or changes in food texture. Foods that have fully thawed to above 40°F (4°C) for more than two hours should be evaluated carefully before refreezing or consuming.

Source: manufacturer service documentation.

Common causes of PO

  1. 01

    Power outage or utility interruption

    Wiring / connection

    A temporary loss of power from the utility grid is the most common trigger. Even a brief outage lasting several hours can allow freezer temps to rise to 18°F (-8°C) or higher, especially in a less-full freezer.

  2. 02

    Accidental unplugging or tripped circuit breaker

    Wiring / connection

    The refrigerator may have been unplugged during cleaning, moving, or renovation work, or a tripped breaker cut power to the outlet. Check the breaker panel and outlet to confirm power is fully restored and stable.

  3. 03

    Loose or faulty power cord connection

    Wiring / connection

    A partially seated power cord at the wall outlet or at the refrigerator can cause intermittent power loss. Inspect the cord and outlet for secure connection, damage, or signs of overheating.

  4. 04

    Faulty or overloaded wall outlet

    Wiring / connection

    A failing outlet or one shared with high-draw appliances can drop voltage intermittently, causing the refrigerator to lose power without a full household outage. Test the outlet with another device or use a voltmeter to confirm stable voltage.

  5. 05

    GFCI outlet nuisance trip

    Wiring / connection

    If the refrigerator is plugged into a GFCI-protected outlet, a nuisance trip can cut power without affecting other circuits. Check for a tripped GFCI outlet nearby and reset it if needed. Refrigerators should ideally be on a dedicated, non-GFCI circuit.

See the test procedure for each cause

Frequently asked questions about PO

What does PO mean on a Whirlpool refrigerator?
PO stands for power outage indicator. It means the refrigerator detected that its power was cut off and the freezer temperature rose to 18°F (-8°C) or higher during that time. The code is a food safety notification, not a sign that the refrigerator has a mechanical problem. Press the MEASURED FILL button to acknowledge and clear it.
How do I fix the PO code on my Whirlpool refrigerator?
Press the MEASURED FILL button to clear the PO indicator from the display. Before doing so, check the contents of your freezer for signs of thawing, since the temperature rose significantly during the power interruption. Also verify that the refrigerator is fully plugged in, the circuit breaker is not tripped, and power to the outlet is stable to prevent future occurrences.
Is my food safe after the PO code appears on my Whirlpool refrigerator?
Not necessarily. The PO code means the freezer reached 18°F (-8°C) or above, which is warmer than the recommended 0°F (-18°C) storage temperature. Foods with ice crystals still present are generally safe to refreeze, but items that have fully thawed should be evaluated carefully. If food reached above 40°F (4°C) for more than two hours, it may not be safe to consume.
Will resetting the PO code fix my Whirlpool refrigerator?
Pressing MEASURED FILL clears the indicator and the refrigerator will continue operating normally, since PO is not a fault code tied to any component failure. The reset simply confirms you have seen the power outage alert. If the code reappears frequently without an obvious power outage, investigate the outlet, power cord, and circuit breaker for intermittent power issues.
How much does it cost to repair a Whirlpool refrigerator showing the PO code?
In most cases, the PO code requires no repair at all since it is triggered by an external power interruption rather than a component failure. If an underlying electrical issue like a faulty outlet or wiring problem is causing repeated power loss, repair costs can range from around $50 to $200 or more depending on the work needed. A licensed electrician would handle outlet or wiring repairs, while appliance-side issues like a damaged power cord would typically fall in the lower end of that range.

Related Whirlpool refrigerator codes

All Whirlpool refrigerator codes
View all 218 Whirlpool refrigerator codes

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

Get Started

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