P2453

Particulate Filter Pressure Sensor A Circuit Range/Performance

Diesel particulate filter (emissions) Generic OBD-II Medium

What it means

P2453 means the diesel particulate filter (DPF) differential pressure sensor is sending a reading outside its normal range. The ECM uses that pressure difference to judge how full the filter is and when to run a regeneration. A bad signal — from a failed sensor, clogged sense hoses, or a genuinely restricted filter — can leave regeneration mismanaged, so the car may drive fine at first but risk a clogged DPF and limp mode.

Medium

Can I keep driving? Usually driveable — but the ECM can't manage DPF regeneration properly, risking a clogged filter and limp mode, so fix it soon.

Real-world scan data

Seen in

691

scans in the past year

Found in

0.1%

of scans

0.2%

of scans that found faults

Appears alongside · share of P2453 scans

P00BCin 26.5% of scans

P0101in 22.3% of scans

P0071in 21.1% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Check-engine light on
Possible reduced power or limp mode
Incomplete or overly frequent DPF regeneration
Possible increase in fuel use

Common causes

Most likely first

Faulty particulate filter differential pressure sensorLikely
Clogged, kinked, or disconnected pressure sense hosesCommon
Damaged wiring or a poor connector at the sensorCommon
A genuinely restricted (soot-loaded) or damaged particulate filterLess often
Faulty ECM (rare)Less often

How to diagnose & fix

Work through it in order

Read freeze-frame and compare the sensor's pressure reading against expected values.
Inspect both pressure sense hoses for soot clogging, kinks, or leaks — a common cause.
Check the sensor connector and wiring for damage or corrosion.
Replace the differential pressure sensor if its signal is out of range.
Assess the DPF for real restriction if the sensor and hoses are good; clear and re-test.

FAQ

Quick answers

Is it safe to drive with P2453?+

Short term, usually yes, but the ECM can't manage regeneration reliably, so the filter can clog and trigger limp mode. Fix it soon.

Can I just clear P2453?+

You can, but it returns until the pressure sensor, its hoses, or the filter restriction is resolved.

Read & clear P2453 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX