Help when you’re under pressure
31 March 2026 
When you are seeing repeated check engine or diesel particulate filter (DPF) warnings and poor mileage out of a full tank, it is easy to blame just the DPF, but an exhaust pressure sensor (EPS) is the input that tells the engine control unit (ECU) what is happening across the filter, and it can’t be overlooked in repair.
If the EPS signal drifts due to age, contamination or fouling, the ECU can delay or miss a much-needed regeneration. The result is a DPF that clogs, undesirable emissions, and an expensive repair. For the workshop, it can mean repeat visits unless the sensor signal is brought back within target parameters.
Built for a hostile exhaust environment
Exhaust pressure sensing is tough work. Heat cycling, soot, moisture and acidic condensate all work against performance, so the construction of your chosen sensor matters as much as fitment.
NTK uses a dual-pressure design with specialised gel coatings. The gel allows the pressure wave through to the sensing element while blocking corrosive chemicals that would otherwise attack the circuitry, helping maintain a stable signal over time.
The NTK Exhaust Pressure sensor family features the three variants required to cater to fitment positions that can differ from vehicle to vehicle, as well as three different measurement types:
- A differential pressure sensor allows the ECU to contrast a before-and-after reading
- A pressure sensor takes a straightforward pressure reading
- A high-pressure sensor does the same but for higher measurement thresholds.
The workshop takeaway
When pressure data is accurate, the ECU can make the right calls on regeneration, EGR, and turbo control. That means a clearer route to the fix and fewer repeat faults.
NTK exhaust pressure sensors are built to OE standards, giving technicians confidence in the signal and supporting reliable diagnostics and first-time fixes.
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