Possible causes of error ob:

• Overloading: 
  • Placing too many clothes in the drum can prevent them from moving freely and create an unbalanced load.
• Uneven distribution: 
  • An uneven distribution of clothes, like all heavy items on one side, can also cause imbalance.
• Large single item: 
  • Washing a single large item like a blanket or duvet can throw off the balance.
• Faulty suspension system: 
  • In rare cases, a malfunctioning suspension system could contribute to imbalance issues.

Troubleshooting the ob error code in Whirlpool Washing Machine

1. Reduce the load: 
   • If the washer is overloaded, remove some clothes and restart the cycle.
2. Redistribute the load: 
   • Open the door and rearrange the clothes evenly throughout the drum, ensuring no heavy items are concentrated on one side.
3. Restart the cycle: 
   • Once you've adjusted the load, close the door and restart the cycle.
4. Run a calibration cycle: 
   • Some Whirlpool models have a calibration cycle designed to address balance issues. Check your user manual for instructions on how to run it.

Additional notes:

• The ob error code might appear with a slightly longer wash time than initially displayed, as the washer tries to compensate for the imbalance.
• In some models, the cycle might pause and display the code, allowing you to adjust the load before resuming.
• If the error persists after trying these steps, there might be another issue. Consult your user manual for specific troubleshooting steps related to your model or contact Whirlpool support for assistance.
• If you frequently encounter this error, consider using smaller loads or investing in laundry bags designed to balance the load.

Remember, safety is crucial. If the washer is shaking violently due to imbalance, turn it off immediately and redistribute the load before restarting.

I hope this information helps you resolve the ob error code on your Whirlpool washing machine!