Exhaust Sensor Malfunction
Electronic sensors built into diesel exhaust systems by the OEM engine manufacturer are here to stay. Practically every OEM engine built since 2007 has both pressure and temperature sensors designed into the Exhaust After-Treatment System (EATS) more commonly referred to as DPF or DEF emissions systems. They are used to control the active DPF regeneration cycle necessary to maintain a properly functioning DPF/DEF exhaust system. Excessive soot build-up will restrict the flow of exhaust gases and cause the DPF to overheat, possibly resulting in catastrophic damage.
Unfortunately these same sensors can be a frequent cause of “check engine” warning lights when they either malfunction or fail. The issue can often be traced to impacted soot that can cause the sensor to either read incorrectly or fail prematurely. EnerBurn® does a great job keeping exhaust-side sensors clean. This benefits the engine owner by preventing lost revenue from down-time and lost profits from expenses related to diagnosing and replacing bad sensors. When it comes to sensors a focus on preventive maintenance is a proven cost-effective strategy.
“This is a pic of my turbo boost sensor (IMAP sensor) which gets carbon packed normally. You can see it is just fine, very little to almost no carbon build up after a year. Paccar recommends a yearly cleaning. But you usually break the sensor on removal and you end up just replacing it. So I’m going to push the cleaning/replacement out to 1 1/2 years. I was very surprised when I pulled it out for replacement and I didn’t break it this time.”
Larry Sullivan, Owner-operator
2011 Paccar engine
EnerBurn customer since October, 2015
Picture of turbo-boost pressure sensor after 1 year.
After Bruce acquired his 2013 Cummins engine he first had to address a DPF that was already clogged with soot. Then he found the carbon compaction problem in the EGR and Delta sensor housing which likely contributed to the problem of his DPF not regenerating properly. The DPF was then replaced at around 276,000 miles. Bruce uses EnerBurn to keep the problems caused by soot build-up from recurring. He also enjoys how much better his truck runs with EnerBurn.
Bruce Luke, Owner-operator
2013 Cummins ISX engine
EnerBurn customer since July, 2017
Picture (above) of soot-impacted air passages in Delta pressure sensor housing from 2013 Cummins engine.
Picture of IMAP sensor (above) from same 2013 Cummins after 4 months without EnerBurn but with regular use of other brand-name fuel additives.