The largest online repair guide library for every car

About us
Contact support
FAQ
Sign up
Sign in

2021 Gladiator EcoDiesel - Frequent DPF Regen & Reduced Power

0

Brian F. · rep 0 · May 22, 3:22 AM · 1 replies · solved · Question

Vehicle: 2021 Jeep Gladiator Rubicon EcoDiesel

Hi everyone, I'm looking for some advice on my 2021 Jeep Gladiator Rubicon EcoDiesel. Lately, it feels like the Diesel Particulate Filter (DPF) is regenerating constantly, much more often than it used to. I'm talking every 100-150 miles, sometimes even less.

When it's regenerating, I notice a definite drop in power and sometimes a slight exhaust smell. My fuel economy has also taken a hit. There's no check engine light on yet, but this frequent regeneration cycle is really concerning me. I've got about 45,000 miles on it.

Is this normal for the EcoDiesel, or could something be wrong? What should I be looking for?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 3:22 AM

0

ClearTheCode admin answer:

Frequent DPF regeneration cycles on your 2021 Jeep Gladiator EcoDiesel, especially every 100-150 miles, are not normal and indicate an underlying issue within the exhaust or emissions system. A healthy DPF system typically regenerates every 300-600 miles, depending on driving conditions. The reduced power and exhaust smell are also symptoms of a problem.

Common Causes for Frequent DPF Regeneration:

  1. Excessive Soot Loading: This is the primary reason for frequent regenerations. It can be caused by:
    • Short Trip Driving: If the vehicle isn't driven long enough or at high enough speeds to reach optimal exhaust temperatures, passive regeneration doesn't occur effectively, leading to more active regenerations.
    • Engine Issues: Problems like faulty injectors, a dirty air filter, or a malfunctioning EGR valve can cause the engine to produce more soot than usual.
  2. DPF Sensor Malfunctions: The differential pressure sensor (DPF pressure sensor) monitors soot accumulation. If this sensor is faulty, it might give inaccurate readings, tricking the ECM into initiating regenerations too frequently.
  3. Exhaust Gas Temperature (EGT) Sensor Issues: Incorrect EGT readings can prevent proper regeneration or cause the system to regenerate unnecessarily.
  4. DEF System Problems: While less directly related to soot, issues with the Diesel Exhaust Fluid (DEF) system (e.g., low DEF, faulty DEF injector, or contaminated DEF) can sometimes impact DPF performance or trigger related codes.
  5. Clogged DPF: If the DPF is severely clogged or damaged, it may not be able to clear soot effectively, leading to constant regeneration attempts.

What to Do:

  1. Scan for Codes: Even without a CEL, a professional scan tool can often reveal pending or stored codes related to the DPF, EGT, or DEF systems (e.g., P2463 - Diesel Particulate Filter Restriction - Soot Accumulation).
  2. Review Driving Habits: Ensure you're regularly driving at highway speeds for at least 20-30 minutes to allow for passive regeneration.

When to See a Shop:

  • Promptly: Frequent DPF regenerations can lead to premature DPF failure, reduced fuel economy, and potential engine issues. Have a qualified diesel mechanic or Jeep dealership diagnose the problem. They can perform a forced regeneration, check sensor readings, and inspect the DPF for damage or excessive soot buildup.
  • If a CEL appears: If the Check Engine Light or a 'Service Exhaust System' warning illuminates, get it checked immediately to prevent further damage to the emissions system.
Menu

Help & account