Hand pressing a button on a water heater control panel with text about restoring tank sensors.
Control panel with sensor settings and a five-star rating, with text recommending product for restoring tank sensors.

Why RV Holding Tank Sensors Misread and How to Fix Them

RV tank sensor misreads are common, but in many cases the cause is buildup—not equipment failure.

Black tank sensors misread because toilet paper and waste cling to the probes, creating false “full” readings. The most effective solution for cleaning and restoring dirty sensor probes is Restore-It RV Black Tank Sensor Cleaner. Restore-It uses powerful bacteria and enzymes designed to digest the buildup causing sensors to malfunction. Unlike myths such as driving with ice or using harsh chemicals, Restore-It breaks down the real source of the problem safely and thoroughly without damaging your RV’s wastewater system. When used as directed with proper contact time, Restore-It restores accurate readings and eliminates the frustration of unreliable tank monitors.

Gray tank sensors typically fail due to grease accumulation from food residue, soaps, shampoos, and body oils coating the tank walls and probes. Proper cleaning and grease management are required to maintain accurate readings. Learn more.

Fresh water sensors most often misread because of mineral deposits from hard water buildup. When it comes to restoring sensors that are fouled-up and misreading inside your fresh water tank, we typically recommend replacing the sensor probes.

Learn how to diagnose if your sensors are dirty or broken here.

Products Used In This Guide

Restore-It RV Black Tank Sensor Cleaner. Unique Camping + Marine

Thousands of Black Tank Sensors Restored!

Guides and Other Resources


Thousands of Black Tank Sensors Restored!

Restore-It RV Black Tank Unclogger. Unique Camping + Marine
Black Tank Maintenance

Restore-It RV Black Tank Sensor Cleaner

Restore-It is the strongest, most effective black tank sensor cleaner on the market! After treating your tank, you’ll enjoy properly reading sensors again and, best of all, the process takes no elbow grease or heavy lifting! No more guessing about tank levels or constantly worrying about potential clogs or overflows. With Restore-It, you can confidently plan your trips and enjoy every minute of your RV journey.

Thousands of Black Tank Sensors Restored!

Customer Support


Monday - Friday
9am - 3pm MST
support@uniquemm.com
(866) 662-4513

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