The Lemon IndexThe particulate filter is having to clean itself too often.
Get it fixed soon. A few more days of normal driving is usually OK, but waiting can turn a small repair into a bigger one or a breakdown.
Short trips that interrupt regeneration. Then: faulty sensor; engine running rich or burning oil.
Owners named P2459 in 8 complaints to the U.S. government, most often on the Ram pickup.
Cars owners report it on
Complaints that name P2459, by model. Raw counts, not a failure rate: popular models get more complaints.
Years owners report it on most: 2022 Ram pickup · 2024 Ram pickup
The details
What P2459 means
The particulate filter is having to clean itself too often.
Can I drive with P2459?
Get it fixed soon. A few more days of normal driving is usually OK, but waiting can turn a small repair into a bigger one or a breakdown.
25% of the owner complaints that name P2459 also say the car loses power or goes into limp mode. A complaint can describe more than one problem, so this doesn't prove the code caused it.
Common causes of P2459
- Short trips that interrupt regeneration
- Faulty sensor
- Engine running rich or burning oil
A shop should confirm the cause with a scan and tests before replacing parts.
What owners describe
- Loses power or goes into limp mode: 25% of complaints
Share of complaints naming the code whose text also mentions each problem.
Model years that report P2459 most
2022 Ram pickup (4), 2024 Ram pickup (2).
Related codes
P2450 P2445 P2444 P2443 P2442 P2441 P2440 P2433
Quick answers
What does P2459 mean?
Diesel Particulate Filter Regeneration Frequency. The particulate filter is having to clean itself too often.
Can I drive with P2459?
Get it fixed soon. A few more days of normal driving is usually OK, but waiting can turn a small repair into a bigger one or a breakdown.
What causes P2459?
Short trips that interrupt regeneration; Faulty sensor; Engine running rich or burning oil.
Counts: NHTSA owner complaints whose text names P2459. A complaint is an owner's report, not a diagnosis. Meanings: the standard SAE J2012 definitions in our own words; manufacturer codes only where verified for that make. General information, not repair advice for your car.