Particulate Filter Deteriorated/Missing Substrate Bank 1
Generic · emissions
Data confidence65%
The control module detected a fault associated with the Particulate Filter Deteriorated/Missing Substrate Bank 1 circuit or function; the stored code identifies the affected component rather than a single failure mode.
Symptoms
MIL or DPF warning illuminated
Possible reduced power or limp mode
Possible frequent regeneration attempts
Possible causes
Excessive soot load beyond regeneration limits
Differential pressure sensor or hose fault
Failed or interrupted regenerations (short trips)
Exhaust leak upstream of the sensor
Underlying engine fault increasing soot output
Recommended checks
Read soot load, ash load and differential pressure values
Check differential pressure sensor and hoses
Verify exhaust gas temperature sensor readings
Check for related injection, EGR or boost codes
Verify regeneration conditions can be met (trip profile)
Particulate Filter Deteriorated/Missing Substrate (Bank 1)
Ford · emissions
Data confidence94%
Ford documents P226D:00 (no sub type information) for its 2024-2025 gasoline-engine OBD monitor strategy as particulate filter deteriorated/missing substrate (bank 1). This three-byte interpretation is application-specific and identifies the detected monitor condition rather than a confirmed failed component.
Recommended checks
Perform a full module scan
Review freeze-frame and occurrence data
Compare commanded and measured values
Check applicable OEM service information
Applies toFord gasoline-engine OBD applications|2024-2025 model years
Powertrain: engine, transmission and driveline systems.
2
Generic SAE-standard code: same meaning on every make.
26D
Specific fault index within the subsystem.
Frequently asked questions about P226D
What does P226D mean?
Particulate Filter Deteriorated/Missing Substrate Bank 1. The control module detected a fault associated with the Particulate Filter Deteriorated/Missing Substrate Bank 1 circuit or function; the stored code identifies the affected component rather than a single failure mode.
Is P226D generic or manufacturer-specific?
P226D exists both as a generic OBD-II code (same meaning on every make) and with 1 manufacturer-specific interpretation(s): Ford. Always read it in the context of your vehicle.
Can TuningBot remove P226D at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
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