Intermittent sensor fault. Mystery warning light that comes and goes. A vehicle that runs perfectly in the workshop but throws a fault on the highway.
We see this constantly. And a lot of the time, the answer is the same: dust.
How Dust Gets Into Electrical Systems
Central Australian dust is extraordinarily fine. Finer than coastal or southern dust. It gets into electrical connectors, contacts, and plug housings through the smallest gaps. Over time, it creates a thin resistive layer on electrical contacts. That layer causes intermittent conductivity — sometimes the signal gets through, sometimes it doesn't.
Add humidity from the wet season or condensation from air conditioning, and that dust layer becomes conductive in the wrong ways, causing false sensor readings and spurious fault codes.
What It Looks Like in Practice
- Intermittent ABS or traction control faults
- Throttle position sensor errors that appear and disappear
- Mass airflow sensor faults that clear themselves after a dust storm
- O2 sensor readings that are just slightly off. Not enough to throw a fault, but enough to affect fuel economy
The Fix
Not always simple, but always methodical. We trace the fault to a specific circuit, inspect the connectors, clean or replace as needed. We don't throw parts at it — we find the actual source of the problem.
If your vehicle is throwing mysterious faults that other workshops can't pin down,
bring it to us.
