★ Proudly serving San Diego since 1987Lakeside, CA · Family Owned
Repairs 619·561·5317 · Hauling 858·472·2047
SD Heavy Truck
& Equipment RepairLakeside, California
Call The Shop
Home / Service & Repair / DPF Service & Cleaning
Service

DPF Service & Cleaning

Diesel particulate filter cleaning, service and diagnosis — including the regen problems and derates that put a truck on the shoulder.

What to expect

The DPF is the single most common reason a modern diesel derates and stops making money. A filter that will not regen, a truck that goes into limp mode on a grade, a dash light nobody can clear — that is the work, and it is work we do constantly.

A blocked DPF is often a symptom rather than the fault. Cleaning a filter without finding out why it loaded up buys you a few weeks. We diagnose the cause — injectors, EGR, sensors, turbo, duty cycle — and fix that too.

Call For Service · 619·561·5317 ↗

What the job covers

  • ✓DPF cleaning and service
  • ✓Filter removal, inspection and replacement
  • ✓Forced and parked regeneration
  • ✓Regen faults and repeated-regen diagnosis
  • ✓Derate and limp-mode diagnosis
  • ✓Differential pressure and temperature sensor faults
  • ✓DOC and SCR system diagnosis
  • ✓DEF system and dosing faults
  • ✓EGR faults that load the filter

Symptoms worth calling about

  • ✓Check-engine or DPF light that will not clear
  • ✓Truck derating or dropping into limp mode
  • ✓Regens happening far more often than they used to
  • ✓Regen starting and never completing
  • ✓Noticeable loss of power or fuel economy
  • ✓Failed or borderline emissions test
Straight Answers

DPF Service & Cleaning — common questions

My truck keeps regenerating. Is the DPF bad?

Maybe, but frequent regens are usually telling you something upstream is loading the filter faster than it should — injectors, EGR, a turbo problem, or a duty cycle the truck was not specced for. Replacing the filter without finding that leaves you back here in a month.

Can you clean my DPF or does it have to be replaced?

Many filters clean up. Whether yours does depends on its condition and how much ash has accumulated, which is a function of miles and oil consumption rather than soot. We will tell you which case you are in before spending your money.

My truck derated on the freeway. What now?

Call the shop. A derate is the engine protecting itself, and continuing to run it that way is how a filter problem becomes an engine problem. We can often tell from the codes whether it is something we can clear or whether it needs to come in.

Will DPF trouble fail my emissions test?

It can, and DPF and emissions work land in the same shop here — so if you fail a CARB test with us, you are already where the repair happens rather than towing to a second shop.

Where We Work

DPF Service & Cleaning across East County and San Diego County

The shop is on Riverside Drive in Lakeside, so the tow is short from most of East County — and a short tow is real money on a truck that will not roll. We take work from across San Diego County.

LakesideBlossom ValleyEl CajonSanteeRancho San DiegoHarbison CanyonAlpineLa MesaLemon GroveSpring ValleyAllied GardensJamulRamonaPowaySan Diego

Need dpf service & cleaning?

Call the shop and talk to someone who works on trucks. No call centre, no runaround.

619·561·5317
Call 619·561·5317 ↗