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P0118: compare coolant temperature with a cold engine

A cold-soaked engine should report a plausible temperature before the first start.

September 25, 20261 min read
AI4Car quick readA short, original guide from the AI4Car knowledge library.

Compare scan data with ambient conditions and other available temperature readings. Inspect the sensor circuit and connector if the value is implausible; never open a hot cooling system.

Quick educational note

For information, not a diagnosis or repair instruction. Vehicle-specific checks are still required. Consult the manufacturer's guidance and a qualified technician.

How to use this information

This article explains general principles and does not establish what is wrong with your vehicle. Read the content limitations.

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P0118: compare coolant temperature with a cold engine | AI4Car