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Diesel particulate filter (DPF)

P2453 Diesel Particulate Filter (DPF) Pressure Sensor A Circuit Range/Performance

The ECU checks the DPF differential pressure sensor signal for plausibility, for example against the expected value with the engine off and across different exhaust flow conditions. P2453 is set when the signal is implausible but still within its electrical range.

Common causes

  • Blocked, split or disconnected sensor hoses
  • Faulty differential pressure sensor
  • Moisture or soot in the sensor lines
  • Sensor hoses swapped
  • Wiring or connector problems

Typical symptoms

  • Check engine light (MIL) on
  • Regeneration disabled or not completed
  • Reduced power or limp mode on some vehicles

P2453 and NuoVolta

When the DPF and its pressure sensor have been removed for off-road or motorsport use, where permitted by law, the NuoVolta DPF / ADV Removal solution adjusts the ECU calibration and the DTC removal feature can disable this code. With the filter fitted, inspect the hoses and test the sensor first.

DPF / ADV Removal Available for 189 ECUs

Related codes

P2002Particulate Filter Efficiency Below Threshold (Bank 1) P242FDiesel Particulate Filter (DPF) Restriction - Ash Accumulation P244ADiesel Particulate Filter (DPF) Differential Pressure Too Low (Bank 1) P244BDiesel Particulate Filter (DPF) Differential Pressure Too High (Bank 1) P2454Diesel Particulate Filter (DPF) Pressure Sensor A Circuit Low P2455Diesel Particulate Filter (DPF) Pressure Sensor A Circuit High P2458Diesel Particulate Filter (DPF) Regeneration Duration P2459Diesel Particulate Filter (DPF) Regeneration Frequency

Diagnose and repair real faults first. Removing or disabling emission systems is only permitted where allowed by law, for example for off-road or motorsport use.