Diesel Particulate Filter Pressure Sensor A Circuit Range/Performance
The P2453 code means the vehicle's onboard diagnostic system has detected: Diesel Particulate Filter Pressure Sensor A Circuit Range/Performance. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- $80 - $350 (parts and labor)
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Common Symptoms
- Check Engine Light on
- DPF warning light may be on
- Failed or aborted regeneration cycles
- Reduced power on some applications
Probable Causes (Ranked by Likelihood)
- Soot-clogged or cracked pressure sensor tubes running to the DPF Very High
- Failed DPF differential pressure sensor giving implausible readings High
- Heat-damaged wiring or corroded connector Moderate
Frequently Asked Questions
What is the difference between P2452 and P2453?
P2452 is the sensor's basic circuit fault; P2453 means the circuit works but the reported pressure is implausible — for example, no pressure change when the engine load changes. The diagnosis is the same on most engines: check the sensor's soot-prone tubes first, then the sensor, then the wiring.
Mechanics Guide Step-by-step diagnosis
Step-by-Step Diagnostic Procedure
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This is the range/performance variant of the DPF pressure sensor codes (see P2452): the sensor responds, but its reading is implausible for current conditions.
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Inspect and clear the two rubber pressure tubes between the sensor and the DPF before condemning the sensor — they fill with soot and crack with heat, and a blocked tube produces exactly an implausible-reading fault.
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Compare the sensor's live differential pressure against expected values at idle and under load.
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Check the connector and wiring for heat damage.
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Meaning corroborated against this site's independently researched diesel-family pages for the same code (Duramax, Hino, Isuzu, Kubota (4 independent diesel families)).
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
P2453 on Diesel, EV & Equipment
The same code ID appears across other engines and platforms. The diagnostic flow varies by manufacturer — these are the platform-specific breakdowns:
Commonly Affected Vehicles
- Diesel vehicles and equipment with a diesel particulate filter (DPF)
Related Codes
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