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Trouble code
P242F: diesel particulate filter load (named with P2463)
The same code points to different failures on different engines. Below, engine by engine, are the documented failures whose records name P242F, with the record's own words, how to tell them apart and the usual fix. The meaning above is taken from the record DPF clogging / regeneration problems.
6.4 Power Stroke (2008-2010)6.7 Cummins 2007-2018
6.4 Power Stroke (2008-2010)
1 documented failure names this code. All about this engine
verified
How widespread: Common
6 NHTSA owner complaints match it, out of 133 checked
Where its record names the code
- soot/ash load PIDs + DTCs (P242F/P2463-family)
Its other signs
- 'exhaust filter' messages, derate/limp until regen
- failed regens on short trips; hot exhaust smell, fan roaring
- excessive backpressure worsens turbo seal leaks (feedback loop)
How to tell it apart
- soot/ash load PIDs + DTCs (P242F/P2463-family)
- if oil is reaching the exhaust, fix the source before/with the filter
- bake/pulse cleaning vs replacement decision by ash load
Usual fix
professional DPF cleaning when substrate intact; fix the oil source (turbo seals, rings) in parallel
Recalls and bulletins
07V-139TSB 20020
Root cause, parts and sources →
6.7 Cummins 2007-2018
1 documented failure names this code. All about this engine
verified
How widespread: Very common
55 NHTSA owner complaints match it, out of 1,355 checked
Where its record names the code
- read DTCs (P242F/P2463 soot-load, P204F etc.) and soot-load / ash-load PIDs before replacing anything
Its other signs
- 'exhaust filter full / regeneration required' message on the overhead console
- frequent or endless regenerations; aborted regens on short trips
- loss of power (inducement / derate) until regeneration completes
- excessive idle, white/grey smoke during regen, hot exhaust smell
- fuel smell in the oil after repeated failed regens
How to tell it apart
- read DTCs (P242F/P2463 soot-load, P204F etc.) and soot-load / ash-load PIDs before replacing anything
- verify regen completes when driven at highway load (30+ min); a filter that regens clean is a duty-cycle problem, not a part problem
- differential-pressure check across the DPF; inspect for cracked/missing substrate
Usual fix
restore duty cycle: sustained highway load so regens complete; correct the underlying reason regens fail (VGT, sensors, EGR) before replacing the filter
Recalls and bulletins
TSB 18-002-14 REV. BTSB 18-002-14 REV. ATSB 18-002-14
Root cause, parts and sources →
A code tells you which system flagged a fault, not which part failed. Read it with the signs your truck shows: symptoms by engine. For your exact truck: check your VIN.