U02A3

Lost Communication With Particulate Matter Sensor

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
The car goes into emergency mode
Problems with the exhaust gas cleaning system

Causes

Open or short circuit in the sensor circuit
Particulate filter sensor malfunction
Problems with the ECU
Wiring harness damage
Poor contact in the sensor connector

How to Fix

Check the integrity of the sensor circuit
Check sensor connectors and contacts
Check the functionality of the diesel particulate filter sensor
Check the condition of the wiring harness
If necessary, replace the sensor or ECU

Related codes

U02A2 U02A4 P2463