DTCs

Wikipedia: Diagnostic Trouble Code (DTC)
All following DTCs are Subaru specific, applicable to closed-type DPF Boxer Diesel models only, Euro 4, 5, 6 emission standards.
Some of these DPF related DTCs trigger DPF light flashing.

ID Name Comment
P1465 DPF Particulate Overfill
P1466 DPF Substrate Damaged (E4: never gets set?)
P1467, P242F DPF Ash Overfill ≥ 100 %
P1468 Oil Dilution ≥ 10 % ; also see Distance to Oil Change
P1469, P246C DPF Limp-Home Mode Reduces injection quantity and power.
P1471 DPF Pressure Difference Sensor Upstream Piping Trouble (E4: never gets set?)
P1472, P2454 DPF Pressure Difference Sensor (Low)
P1473, P2455 DPF Pressure Difference Sensor (High)
P147B Catalytic Converter and DPF
P2453 Particulate Filter Pressure Sensor “A” Circuit Range/Performance

Related ROM code has not been analyzed completely yet, no guarantees as usual. It is definitely much more sophisticated compared to Subaru petrol ROMs.

Updates

  • 2016-10 Added DPF related Euro 6 DTCs.
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One response to “DTCs

  1. What could P1472 be caused by?
    Was lit a couple miles, then didnt show next engine turn on.

    A couple miles more and DPF started the forced regen.
    Drove as per instructed, light went off. Then on again, once again drove as instructed but this time the DPF went into P1469 and flashing DPF light.

    Like

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