Question
How does temperature affect TPMS sensor readings?
Answer
Temperature changes expand or contract tire air, so sensors use temperature compensation to adjust readings.
Explain
For every 10°C (18°F) increase, tire pressure rises ~1 PSI; for every 10°C decrease, pressure drops ~1 PSI. TPMS sensors measure both pressure and temperature, then apply a calibration curve (e.g., 25°C = baseline). CHEPQ tools display raw (uncompensated) and calibrated values, helping technicians diagnose seasonal pressure fluctuations vs. real leaks.
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