U049E

Invalid Data Received From Direct Ozone Reduction Catalyst Temperature Sensor

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$33–89 (est.)

Symptoms

Check Engine light comes on
Possible reduction in engine power
Increased fuel consumption
Unstable engine operation at idle

Causes

Malfunction of the catalyst temperature sensor
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
ECU malfunction

How to Fix

Check the condition of the catalyst temperature sensor
Check the integrity of wiring and connectors
Test the sensor using diagnostic equipment
Replace sensor if necessary
Reset the error and check the system operation

Related codes

U049D U049F U04A0