P2458 - Previously Set DTC

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Posts: 1
Joined: Fri Jun 14, 2019 7:26 am
Vehicle: Ford C-MAX, 1.6TDCI, 2008

P2458 - Previously Set DTC

Post by robertvh » Fri Jun 14, 2019 9:01 am

I own a Ford C-MAX 1.6TDCI, engine G8DC

A few months ago, the turbo and DPF have been replaced.

Car is running fine, however when I connect it to Forscan (with engine running) it shows:
===PCM DTC P2458-21===
Code: P2458 - Diesel Particulate Filter Regeneration Duration

Additional Fault Symptom:
- Signal is Above Maximum Threshold

- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

I see no other DTC codes.

Question: does the line "previously set DTC" mean that there were problems with regeneration, but it is now OK?
I would expect that if there is still something wrong, the DTC would still be active?


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