P00D9

Ambient Air Temperature Sensor Circuit B

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$22–56 (est.)

Symptoms

Incorrect temperature readings on the instrument panel
Reduced climate control efficiency
Increased fuel consumption in the cold season

Causes

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

How to Fix

Check the continuity of the sensor circuit using a multimeter
Inspect the wiring harness for damage
Check the contacts in the sensor connector
Replace ambient temperature sensor B if necessary
Flash ECU if problem persists

Related codes

P0070 P0071 P0072