P2452 on 2007-2014 Suzuki SX4 (Base, GL, GLX, AWD) — Diesel Particulate Filter Pressure Sensor "A" Circuit
1 vehicles · 1 makes · $150-$1,500 repair
Most Reported On
P2452 is an OBD-II diagnostic trouble code meaning “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. This code is most commonly reported on 2007-2014 Suzuki SX4 (Base, GL, GLX, AWD), with repair costs ranging from $150 to $1,500.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P2452, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
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BlueDriver Pro Bluetooth Scanner
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Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
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LAUNCH CRP123X OBD-II Scanner
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A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
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Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
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- Oil reset, EPB, BMS, TPMS, injector coding
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FAQ
What does P2452 mean?
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.
What are the most common causes of P2452?
The most common causes of P2452 are: 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). The specific cause varies by vehicle.
How much does it cost to fix P2452?
Repair costs for P2452 range from $150 to $1,500, depending on the vehicle and root cause.
Which vehicles are affected by P2452?
Au7o has documented P2452 across 1 vehicle models from 1 manufacturers: Suzuki.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.