Credov

P2452 fault code: what it means

P2452: DPF pressure sensor electrical fault. Regeneration cannot be controlled properly until fixed.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

  1. failed exhaust pressure sensor (G450)
  2. damaged wiring or plug
  3. blown fuse

P2452 by make

Audi

DPF pressure sensor electrical fault. Regeneration cannot be controlled properly until fixed.

Usual causes: failed exhaust pressure sensor (G450); damaged wiring or plug; blown fuse

Ford

DPF pressure sensor circuit fault: an electrical problem with the sensor that measures the filter's back pressure.

Usual causes: faulty DPF pressure sensor; sensor wiring or plug

GWM

DPF pressure sensor circuit.

Usual causes: faulty DPF pressure sensor; split or blocked sensor pipes; wiring

Isuzu

DPD differential pressure sensor circuit.

Usual causes: faulty DPD pressure sensor; split or blocked sensor hoses; wiring

LDV

DPF pressure sensor circuit.

Usual causes: faulty DPF pressure sensor; split or blocked sensor pipes; wiring

Mazda

SkyActiv-D: exhaust gas pressure sensor No.2 (DPF pressure sensor) signal fault. No engine light for this one, but DPF soot readings are wrong until fixed.

Usual causes: exhaust gas pressure sensor No.2; sensor connector or terminals

Mitsubishi

DPF differential pressure sensor circuit fault.

Usual causes: faulty DPF pressure sensor; sensor wiring or connector fault

Skoda

DPF pressure sensor electrical fault. Regeneration cannot be controlled properly until fixed.

Usual causes: failed exhaust pressure sensor (G450); damaged wiring or plug; blown fuse

Volkswagen

DPF pressure sensor electrical fault. Regeneration cannot be controlled properly until fixed.

Usual causes: failed exhaust pressure sensor (G450); damaged wiring or plug; blown fuse

Volvo

DPF pressure sensor A circuit fault.

Usual causes: faulty DPF differential pressure sensor; split or blocked sensor hoses; wiring

What the repair usually costs

Not sure what P2452 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.