Code Definition

P246B (00-2F) — Vehicle Conditions Not Met for DPF Regeneration

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P246B

P246B is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P246B is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

DTC P246B indicates the vehicle conditions required for diesel particulate filter regeneration have not been met. The module only allows regeneration when a set of enabling conditions are satisfied, such as adequate coolant and exhaust temperature, a suitable vehicle speed and load, sufficient fuel level, and the absence of faults that would inhibit the process. The code sets when one or more of these conditions is not met for a calibrated period so regeneration cannot start or complete. This is an enablement fault rather than a circuit failure, and it commonly accompanies a driving pattern of...

Join TaT to view the complete code information and diagnostic details.

Quick Facts