Code result
U3576
Stack Differential Pressure Sensor Circuit
High severity
What it means
Generic fault on the differential pressure sensor across the fuel cell stack — measures the pressure drop between cathode and anode (used to detect membrane damage or flooding).
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Sensor failed
highOne of the most commonly reported causes for this code — check this first.
Gateway module routing CAN messages incorrectly
lowLess common, but worth ruling out after the more likely causes.
CAN terminating resistor (120 Ω) drifted out of spec
lowLess common, but worth ruling out after the more likely causes.
Related help
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