DPF sensors: pressure and temperature sensors explained
What the DPF differential pressure sensor and exhaust temperature sensors do, symptoms of a faulty DPF sensor and how they are tested.
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DPF sensors and sensor parts
Differential pressure sensors, exhaust temperature sensors and sensor hoses for DPF systems, and how to match the right part to the vehicle.
Short answer
DPF sensor parts include the differential pressure sensor, exhaust gas temperature sensors and the pressure hoses or pipes that connect them. Match parts by vehicle and part number, and check the hoses before replacing a sensor.
Products are being researched for this category. We only list products with verified manufacturer information. In the meantime, the buying guide below explains what to look for.
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Matching the right part
Sensors differ between engines even within one model range. Use the vehicle identification number or the part number on the old sensor, and check connector type and hose layout. For symptoms and testing, see DPF sensors explained.
Check the cheap parts first
Split, disconnected or blocked pressure hoses cause many of the same faults as a failed sensor. Inspect them before buying a sensor.
What to check before buying
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Part number match
By VIN or the original sensor's number.
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Hoses and pipes
Often the actual fault; replace with heat-resistant parts.
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Adaptation
Some vehicles need a reset after sensor replacement.
DPF diagnostics: fault codes, soot load and testing
How DPF problems are diagnosed: fault codes, soot and ash load values, sensor checks, back-pressure and flow testing.
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Why modern BS-VI and Euro 6 diesels rely on a DPF, what else is in the exhaust system, and how to avoid DPF problems on a newer diesel.
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