P2453 on Suzuki
Diesel Particulate Filter Pressure Sensor "A" Circuit Range/Performance
P2453 on Suzuki vehicles indicates diesel particulate filter pressure sensor "a" circuit range/performance. Au7o has documented this code across 1 Suzuki model — most commonly on SX4. This code applies to diesel vehicles and means the engine computer detected that the diesel particulate filter (DPF) differential pressure sensor "A" signal is out of its expected range or behaving implausibly. This sensor monitors pressure across the DPF to track soot loading and trigger regeneration. An out-of-range reading means the computer can't reliably gauge how clogged the filter is, which can disrupt regeneration timing. It is generally not an immediate hazard, but if unresolved it can lead to DPF clogging and related emissions faults. Typical repair costs on Suzuki range from $150 to $1,500, depending on the specific model and root cause.
Common Causes of P2453
- •Faulty DPF differential pressure sensor
- •Clogged, kinked, or cracked sensor pressure hoses
- •Soot buildup blocking the sensor ports
- •Wiring or connector issues at the sensor
- •Actual DPF restriction skewing sensor readings
- •Moisture or contamination in the connector
P2453 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.
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View P2453 across all makes →Frequently Asked Questions
What does P2453 mean on Suzuki?▼
P2453 stands for "Diesel Particulate Filter Pressure Sensor "A" Circuit Range/Performance." This code applies to diesel vehicles and means the engine computer detected that the diesel particulate filter (DPF) differential pressure sensor "A" signal is out of its expected range or behaving implausibly. This sensor monitors pressure across the DPF to track soot loading and trigger regeneration. An out-of-range reading means the computer can't reliably gauge how clogged the filter is, which can disrupt regeneration timing. It is generally not an immediate hazard, but if unresolved it can lead to DPF clogging and related emissions faults. On Suzuki specifically, this code is documented across 1 model.
What causes P2453 on Suzuki vehicles?▼
Common causes on Suzuki: Faulty DPF differential pressure sensor, Clogged, kinked, or cracked sensor pressure hoses, Soot buildup blocking the sensor ports, Wiring or connector issues at the sensor, Actual DPF restriction skewing sensor readings. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P2453 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 P2453 documented?▼
Au7o has documented P2453 on 1 Suzuki model: SX4.