U0611

Lost Communication With Intake Air Temperature Sensor 1 Bank 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$6–28 (est.)

Symptoms

Check Engine light comes on
Increased fuel consumption
Reduced engine power
Unstable operation at idle
Possible problems starting the engine in cold weather

Causes

Open or short circuit in the sensor circuit
Malfunction of the air temperature sensor itself
Poor contact in the sensor connector
Wiring harness damage
ECU malfunction (rare)

How to Fix

Check the integrity of the sensor wires and connectors
Measure sensor resistance at different temperatures
Check the supply voltage and ground in the sensor circuit
Replace the air temperature sensor if necessary
Reset the error and check the system operation

Related codes

U0100 U0121 U0155