U01B1
Lost Communication With Particulate Matter Sensor B
U01B1 is an OBD-II diagnostic trouble code meaning: Lost Communication With Particulate Matter Sensor B. Common causes: open or short circuit in the sensor circuit, particle sensor malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine Light Is On
- Reduced engine power
- Increased fuel consumption
- Inability to perform DPF regeneration
- Error message on the dashboard
Causes
- Open or short circuit in the sensor circuit
- Particle sensor malfunction
- Problems with the sensor connector
- Engine control unit malfunction
- Corroded contacts or damaged wiring harness
How to Fix
- Check the integrity of the wiring to the sensor
- Inspect the sensor connector for damage
- Check the power supply and ground of the sensor
- Test the particle sensor (replace if necessary)
- Reset the error and check for its reappearance
Related codes
Error U01B1 by Vehicle Brand
FAQ
What does the U01B1 code mean?
U01B1 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Particulate Matter Sensor B
What causes a U01B1 error code?
The most common causes of U01B1 include: Open or short circuit in the sensor circuit; Particle sensor malfunction; Problems with the sensor connector; Engine control unit malfunction.
How do I fix a U01B1 diagnostic trouble code?
To fix U01B1: Check the integrity of the wiring to the sensor. Inspect the sensor connector for damage. Check the power supply and ground of the sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U01B1?
Yes, but get it checked soon
How much does it cost to fix U01B1?
The estimated repair cost for U01B1 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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