U02A3
Lost Communication With Particulate Matter Sensor
U02A3 is an OBD-II diagnostic trouble code meaning: Lost Communication With Particulate Matter Sensor. Common causes: open or short circuit in the sensor circuit, particulate filter sensor malfunction. Estimated repair cost: $56–167.
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
Error U02A3 by Vehicle Brand
FAQ
What does the U02A3 code mean?
U02A3 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Particulate Matter Sensor
What causes a U02A3 error code?
The most common causes of U02A3 include: Open or short circuit in the sensor circuit; Particulate filter sensor malfunction; Problems with the ECU; Wiring harness damage.
How do I fix a U02A3 diagnostic trouble code?
To fix U02A3: Check the integrity of the sensor circuit. Check sensor connectors and contacts. Check the functionality of the diesel particulate filter sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U02A3?
Yes, but get it checked soon
How much does it cost to fix U02A3?
The estimated repair cost for U02A3 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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