U0173
Lost Communication With Restraints System Sensor D
U0173 is an OBD-II diagnostic trouble code meaning: Lost Communication With Restraints System Sensor D. Common causes: open or short circuit in sensor d circuit, malfunction of the sensor d itself. Estimated repair cost: $56–167.
Symptoms
- The airbag light on the dashboard is on
- The passive safety system can be disabled
- The error is stored in the ECU memory
- Possible problems with diagnostics through the scanner
- In some cases there may be false alarms of the system
Causes
- Open or short circuit in sensor D circuit
- Malfunction of the sensor D itself
- Connector problems or contact corrosion
- Airbag module (SDM) malfunction
- Problems with the car's CAN bus
How to Fix
- Carry out diagnostics with a scanner to accurately determine the problem
- Check the integrity of the circuit and connectors of sensor D
- Inspect sensor D for mechanical damage
- Check the sensor resistance and compare with the standards
- Repair only from an authorized dealer
Related codes
Error U0173 by Vehicle Brand
FAQ
What does the U0173 code mean?
U0173 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Restraints System Sensor D
What causes a U0173 error code?
The most common causes of U0173 include: Open or short circuit in sensor D circuit; Malfunction of the sensor D itself; Connector problems or contact corrosion; Airbag module (SDM) malfunction.
How do I fix a U0173 diagnostic trouble code?
To fix U0173: Carry out diagnostics with a scanner to accurately determine the problem. Check the integrity of the circuit and connectors of sensor D. Inspect sensor D for mechanical damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0173?
Do not drive — repair immediately
How much does it cost to fix U0173?
The estimated repair cost for U0173 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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