Code Definition

P244C — DPF Exhaust Temperature Too Low for Regeneration

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

About P244C

P244C 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.

When P244C is stored, the module has detected a signal or supply voltage lower than the expected operating range.

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 P244C 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 P244C indicates the exhaust temperature at the diesel particulate filter is too low to start or sustain regeneration. To burn off accumulated soot, the module raises exhaust temperature, often using post injection or other strategies, and monitors the exhaust gas temperature sensors at the filter. The code sets when regeneration is commanded or expected but the exhaust temperature stays below the calibrated minimum for a set period, so the filter cannot regenerate. This points to insufficient exhaust heat rather than an electrical fault, and the consequence is rising soot loading, repeated...

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