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P2452 — DPF Pressure Sensor A Circuit

CautionAftertreatmentLimp to the next safe stop

Seen on: Heavy Truck/Diesel

DPF Pressure Sensor A Circuit. Common causes: DPF differential pressure sensor failure.

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How serious is it?

Caution. Limp to the next safe stop.

Most likely causes

  1. DPF differential pressure sensor failure
  2. Plugged sensor ports
  3. wiring fault

First moves (roadside)

  1. Inspect sensor hoses for blockage
  2. measure sensor voltage at idle

FAQ

What does P2452 mean?

DPF Pressure Sensor A Circuit. Common causes: DPF differential pressure sensor failure.

How serious is P2452?

Caution — Limp to the next safe stop.

What's the most likely cause of P2452?

The most common cause is: DPF differential pressure sensor failure. Other possibilities include Plugged sensor ports; wiring fault.

Can I keep driving with P2452?

Limp to the next safe stop. When in doubt, get a qualified mobile diesel tech on the truck before continuing.

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Find a mechanic or related guides

General diagnostic guidance for diesel engines (Cummins, Detroit, PACCAR, Volvo, Mack and more). Not a substitute for a scan-tool diagnosis on your specific truck.