HGV engine sensors: identification and replacement
Engine sensors on modern commercial vehicles are not generic components. A camshaft position sensor for a DAF XF105 uses a different connector, signal protocol, and physical format to the same sensor on a MAN TGX — even if both carry the same nominal function. Fitting the wrong sensor produces persistent fault codes or incorrect engine management behaviour even when the sensor itself is electrically functional.
Truckstop Group stocks Hella camshaft position sensors for DAF and Iveco applications in 250mm and 322mm variants. DT Spare Parts fuel pressure sensors, exhaust backpressure sensors, and rotation speed sensors cover the main diagnostic and control sensor requirements on commercial vehicle engines. EBS oil dipstick sensors for MAN and Mercedes-Benz round out the range.
Exhaust backpressure sensors are particularly relevant on Euro 5 and Euro 6 vehicles with DPF systems. The sensor monitors differential pressure across the DPF to determine filter loading. A failed or contaminated sensor produces incorrect regeneration events and, in some cases, prevents active regeneration entirely.
Always confirm the OE part number from the existing sensor before ordering. Connector type alone is insufficient — calibration and output signal range vary between sensors carrying the same connector.
For part identification, call us on 01527 68279 or contact our team at https://truckstopgroup.co.uk/pages/contact.
Frequently asked questions
How do I identify the correct engine sensor for my HGV?
The most reliable method is to read the part number from the existing sensor on the vehicle. Alternatively, provide the vehicle's chassis number (VIN) and engine code when ordering and we can confirm the correct part number before despatch.
What fault codes indicate a failed camshaft position sensor?
Fault codes for camshaft position sensor failure vary by make and diagnostic system, but typically present as P0340-P0343 range codes (camshaft position sensor circuit malfunction). Symptoms include difficult starting, engine management warning, and in some cases engine shutdown.
Can camshaft sensors be replaced without draining fluids?
On most commercial vehicle applications, camshaft position sensors are accessible without draining coolant or oil. The sensor typically threads or clips into a boss on the timing cover or camshaft housing. Always check the installation location on the specific vehicle before starting.
What does an exhaust backpressure sensor do in a DPF system?
The exhaust backpressure sensor measures differential pressure across the DPF filter. As the filter loads with soot, pressure differential increases. The engine management system uses this reading to determine when to initiate a regeneration cycle to burn off accumulated soot.
Do you sell HGV engine sensors near me?
Truckstop Group delivers HGV engine sensors to all UK mainland addresses. Next-day delivery is available on stocked lines. Same-day collection is available from our branches in Redditch, Worcester, Birmingham, and Evesham.
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