Tag
#sensor
4 posts in Car Diagnostics blog about "sensor" — OBD-II diagnostics, DTC codes, repair. ← All posts
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Hard to start when hot: the fault that hides on a cold morning
A car that starts perfectly cold and struggles when hot has a specific set of causes, and heat is doing the diagnosis for you.
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Rain sensing wipers not reacting: the sensor lives on the glass
The sensor does not see rain. It measures how light reflects inside the windscreen, which explains almost everything about how it fails.
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P0191 to P0193: fuel rail pressure sensor circuit and performance
Before you conclude the fuel system cannot hold pressure, confirm that the thing measuring pressure is telling the truth. These codes are about the instrument.
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MAF and MAP Sensor OBD-II Diagnostics: P0100, P0105, P0171 via Live Data
How to distinguish MAF sensor fault from MAP, vacuum leak, or clogged air filter via OBD-II Live Data: P0100, P0101, P0105, P0171 — step-by-step algorithm without blind replacement.