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Error code B815836A / BB815839A on an HP OfficeJet Pro 9018 typically indicates a firmware-level crash, often occurring during the printhead alignment process. It suggests a failure in the ink system, such as corrupted calibration data or a hardware fault within the printhead carriage.
Troubleshooting Steps
Check the ink cartridges for leaks
Open the ink cartridge access door.
Wait until the carriage stops moving.
Remove each ink cartridge one at a time.
Inspect each cartridge for leaking ink.
Replace any leaking cartridge. Do not use leaking cartridges.
Reinstall cartridges that are not leaking.
Close the cartridge access door.
Reset the printer
Turn off the printer using the power button.
If it does not turn off, disconnect the power cord from the printer.
Unplug the power cord from the power source.
Wait60 seconds.
Plug the power cord directly into a wall outlet and reconnect it to the printer.
Turn the printer back on.
Reseat the printhead(only if your printer has a removable printhead with a latch)
Open the cartridge access area.
Wait for the carriage to stop moving.
Check whether the carriage has a latch.
With the printer turned on, disconnect the power cord from the printer.
Lift the carriage latch.
Slightly lift the printhead, then place it back down.
Gently wiggle the printhead left and right.
Lower the latch until it stops.
Close the access area.
Reconnect the power cord.
Repeat printhead reseating if needed
If the error remains, you can repeat the printhead reseating stepsup to three times.
Possible Reason
Based on the HP document, this type of error can be related to:
