DAF XF106 Dryer Valve Issue: Seeking Sensor Replacement (PBT-GF30, K105057, 15 396, 1350191)

The discussion addresses a recurring issue with the dehumidifier valve pressure sensor in DAF XF106 trucks, where water ingress and freezing cause a constant pressure reading of 65 bar. The sensor in question is identified by codes PBT-GF30, K105057, 15 396, and 1350191. Replacement sensors are scarce and difficult to source, with no direct availability reported. Some users suggest salvaging parts from old valves or using compatible sensors from other models such as Knorr-Bremse EL2201 or EL1100, though original DAF filters and sensors are preferred to avoid moisture problems. Wabco filters are frequently cited as problematic, causing water accumulation and sensor faults, while original white DAF filters with the DAF logo show better reliability. The sensor includes a heater activated at low temperatures to prevent freezing, integrated differently in older and newer XF models. Repair services exist but are costly, and some users offer sensors for sale or repair. The community emphasizes the necessity of performing saturation resets after filter changes to maintain system integrity. Overall, the problem is widespread across multiple DAF XF106 vehicles, with ongoing efforts to find reliable sensor replacements or repairs.
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