Johnny’s RV Works has introduced its complete plug-and-play line of analog and digital Diesel Exhaust Fluid (DEF) head sensor simulators and controller. The company said the new product helps prevent engine derate due to sensor failure.
Johnny’s RV Works Owner John T. Getter said the new Rescue-Ranger is a patent-pending comprehensive analog and digital product line designed to work with 2010-2016 Freightliner, Spartan and PowerGlide diesel-powered motorhome chassis.
It also works with 2017 to current motorhome diesel chassis. The EZ Switch controller enables flexible on/off use of the simulators.
“This is a cutting-edge product in the marketplace,” Getter said. “We have designed the Rescue-Ranger and EZ Switch to not interfere with any motorhome chassis emissions system. With the Rescue-Ranger simulator products in use, the motorhome remains 100% emissions compliant.”
The company said the product line can be used as either a curative or preventive measure to address the effects of commonplace DEF head sensor failure.
“Once a DEF head sensor error code is experienced, coach functionality will become limited as the result of the built-in ‘derating’ process,” a company spokesperson said. “Once fully derated a coach will enter ‘limp’ mode whereby maximum travel speed is 5 mph and recovery can only be accomplished at a Cummins service facility.”
Getter said the RV industry at large and diesel-powered motorhome owners are aware of the frequency of DEF head sensor failure and its undesirable consequences.
Getter is an authorized Cummins repair technician. He said he created the new product line after recognizing the need for a simulator that would allow coach owners to have full use of their motorhome even if a DEF head sensor error code was already present.
“It was important that the coach retain its full functioning emissions systems and stay fully compliant,” Getter said, “and remain 100% drivable.”
