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
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)).
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.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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:
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