B0158

Ambient Air Temperature Sensor Circuit

Severity

✅ Low

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$11–56 (est.)

Symptoms

Incorrect temperature readings on the instrument panel
Climate system malfunction
Check Engine Light Illuminates

Causes

Open or short circuit in the sensor circuit
Ambient temperature sensor malfunction
Wiring harness damage
Poor contact in the sensor connector

How to Fix

Check the continuity of the sensor circuit using a multimeter
Inspect the sensor connector for damage or corrosion.
Replace ambient temperature sensor if necessary
Check and repair the wiring harness if damage is found.

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