P2452 on Suzuki
Diesel Particulate Filter Pressure Sensor "A" Circuit
P2452 on Suzuki vehicles indicates diesel particulate filter pressure sensor "a" circuit. Au7o has documented this code across 1 Suzuki model — most commonly on SX4. This code applies to diesel vehicles and indicates a general electrical fault in the diesel particulate filter (DPF) differential pressure sensor "A" circuit. This sensor measures the pressure drop across the DPF so the computer can estimate soot load and decide when to run a regeneration cycle. A circuit fault means the computer can't trust the sensor, so it may not regenerate properly. While not an immediate breakdown, it can lead to DPF clogging over time and should be repaired to keep the emissions system working correctly. Typical repair costs on Suzuki range from $150 to $1,500, depending on the specific model and root cause.
Common Causes of P2452
- •Faulty DPF differential pressure sensor
- •Wiring or connector fault in the sensor circuit
- •Clogged, cracked, or disconnected sensor pressure hoses
- •Corrosion or moisture in the connector
- •Soot contamination of the sensor ports
- •PCM/ECM circuit fault (rare)
P2452 on Suzuki by Model
Suzuki SX4(1 issue)
- SX4 1.9 DDiS EGR + DPF Issues (Fiat-Sourced Diesel)2007-2014
The 1.9 DDiS in the SX4 is the Fiat Multijet 8V 939A engine, shared with Croma/Bravo. Same EGR cooler clogging, DPF regeneration failures, and turbo actuator wear issues as in Fiat applications. Short-trip duty cycles especially destructive — DPF cannot complete passive regen.
Looking for P2452 on a different make?
View P2452 across all makes →Frequently Asked Questions
What does P2452 mean on Suzuki?▼
P2452 stands for "Diesel Particulate Filter Pressure Sensor "A" Circuit." This code applies to diesel vehicles and indicates a general electrical fault in the diesel particulate filter (DPF) differential pressure sensor "A" circuit. This sensor measures the pressure drop across the DPF so the computer can estimate soot load and decide when to run a regeneration cycle. A circuit fault means the computer can't trust the sensor, so it may not regenerate properly. While not an immediate breakdown, it can lead to DPF clogging over time and should be repaired to keep the emissions system working correctly. On Suzuki specifically, this code is documented across 1 model.
What causes P2452 on Suzuki vehicles?▼
Common causes on Suzuki: Faulty DPF differential pressure sensor, Wiring or connector fault in the sensor circuit, Clogged, cracked, or disconnected sensor pressure hoses, Corrosion or moisture in the connector, Soot contamination of the sensor ports. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P2452 on a Suzuki?▼
Repair costs on Suzuki range from $150 to $1,500, depending on the specific model and root cause.
Which Suzuki models have P2452 documented?▼
Au7o has documented P2452 on 1 Suzuki model: SX4.