P24A0: Closed Loop Particulate Filter Regeneration Control At Limit - Temperatur… — what it means, the affected system and what to check before replacing parts.
Meaning, symptoms, causes and checks
Closed Loop Particulate Filter Regeneration Control At Limit - Temperature Too Low. Basic catalogue definition; diagnostic details have not yet been reviewed.
Affected system: Powertrain
Symptoms
- The engine or DPF/emissions warning may appear.
- Poor regeneration, reduced engine power or higher fuel use may accompany the condition.
Possible causes
- A slow or faulty exhaust-temperature sensor or its wiring may report the wrong temperature.
- An auxiliary fuel injector used to raise exhaust heat, where fitted, may fail to operate correctly.
- Heavy soot loading or an exhaust leak near the filter can interfere with reaching regeneration temperature.
What to check
- Scan for accompanying faults and compare live exhaust-temperature readings.
- Inspect temperature-sensor wiring and connectors for damage or corrosion.
- Where an auxiliary heating injector is fitted, check its operation with an appropriate diagnostic procedure.
- Assess DPF loading and inspect the cooled exhaust for leaks before replacing parts.
Also written as: P24A0-00, P24A000 (some scan tools add the fault-type byte, e.g. -00).