Parked regen light flashing?
This light is only available when the truck is requesting a parked regen. Every truck manufacturer designs this feature to appear when the soot level in the DPF filter reaches a certain level in order for the truck to keep operating.
What does this “soot” look like?
When your truck is requesting a parked regen it means that the passive regen your truck already went through was not enough to burn the soot in your DPF filter.
Do you actually need to do a parked regen when the truck is asking for it?
The short answer is, Yes! If you keep driving your truck without doing a parked regen your truck will enter a derated mode. When this occurs your engine power and/or your speed will be limited.
What happens if it can’t perform the parked regent when I try?
Well, this can happen when the “active” regeneration failed for some reason. An active regen is when the truck does this process automatically. This happens when the soot reaches a certain threshold and starts the active process to burn the soot off. You may notice your engine running harder when this is in"active mode" There are so many causes for a failed “active regen” because it relies on conditions that need to be met in order for it to happen. If you fail a “parked regen” you need to be aware that this will only lead to more issues and/or more derates if you continue driving. So be aware of what is going on so you can seek service as soon as possible.
How long does a parked regeneration take?
It takes approximately 20-60+ minutes. It will continue to regen until the to soot level has reached ‘low’ or ‘0%.’ Some trucks will let you monitor your soot level gauge on the dashboard.
What’s the difference between parked regen and service forced regen?
Parked regen: Truck asks for regen and you start the regen by hitting a button on the dash.
Service Forced Regen: A diagnostic scan tool at the dealer level will initiate a forced regen. The conditions here do not have to be met perfectly and they will force a regeneration to take place. A service forced regen is done in order for the system to verify that the aftertreatment system is in good and working order. If this completes the forced regen without any fault codes and issue then the truck is ready to go!
Example: 2013 Volvo D13, has SPN 4094 FMI 1, MID 128 PSID 90 FMI 14. Dashboard lights up (DEF Quality being evaluated, 5mph temporary removed, continue driving).
The only way to clear this fault code is to make sure your DPF/SCR system is operating without any other faults. This fault will stay active until a service forced regeneration is activated and the ECM/ACM runs through all the checks to make sure the nox sensor values are within the required limits before it makes this fault code inactive.
So you can start a service forced regeneration even if you have DEF quality fault codes. The truck needs to run through all its checks to make sure the system is within the limits set by the manufacturer in order to clear the faults. This method is used on Volvo’s, Mack’s, Detroit diesel, and other manufacturers as well.
A service forced regeneration will ensure that the DPF / SCR System is clean from any soot buildup. If you make sure to do this more than just once it may help your DPF system last longer. We recommend running a service regeneration once a month. You may see better MPG because your filters are cleaned out and moving air more efficiently through your exhaust.
OTR provides YOU with a tool that will allow you to start a forced regeneration at the highest dealer level yourself. The DTC + AFT Reset tool (forced regen enabled) will allow you to do this within 30 seconds - 4 minutes.
- Start the engine, make sure it’s at operating temperature.
- Make sure PTO off, parking brake applied, and the clutch is not engaged.
- Plug in the reset tool into the diagnostic port. *set a timer*
- Wait for the regeneration to start.
- Monitor the Exhaust temperature and RPM.
- When the idle comes back down it means that the regen has finished.
- If the regen starts and stops then you may have a problem that prevents the regen from taking place. Check for faults and try again.
2007-2013 Volvo / Mack engines - Regen enabled
2014-2019 Volvo / Mack engines - Regen enabled
2007-2016 Freightliner / Western Star Detroit Diesel engines - Regen enabled
If you don’t see your manufacturer or engine, please contact us. We are adding additional coverage. Sales@otrperformance.com