[SOLVED] Fixing U0172: Restraints System Sensor ‘c’ Communication Lost

The automobile fault code U0172 indicates a problem with the Restraints System Sensor ‘C’ in the vehicle’s airbag system. This fault code is often accompanied by the Air Bag Warning Light and Engine Light turning on. The cause of this issue could be a faulty sensor, an open or shorted harness, or a poor electrical connection.

It is important to address this issue promptly as it can affect the proper functioning of the airbag system. The repair process involves visually inspecting the wiring harness and connectors for any damage or corrosion and checking for broken or bent pins.

The repair time for this issue is estimated to be around 1.0 hour.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

If you’re experiencing an Air Bag Warning Light and an Engine Light ON, read on to learn more about the symptoms of the u0172 fault code.

  • The automobile fault code U0172 has the following symptoms: Air Bag Warning Light ON, Engine Light ON (or Service Engine Soon Warning Light).

The automobile fault code u0172 can be caused by a faulty sensor, open or shorted harness, or poor electrical connection.

  • The automobile fault code U0172 can be caused by a faulty Restraints System Sensor ‘C’.
  • It can also be caused by an open or shorted harness of the Restraints System Sensor ‘C’.
  • Additionally, a poor electrical connection in the circuit of the Restraints System Sensor ‘C’ can also trigger this fault code.

Below are some possible fixes for the automobile fault code u0172, including inspecting wiring harness and connectors for damage or corrosion.

  • To fix the automobile fault code u0172, you need to check the possible causes listed above.
  • Visually inspect the related wiring harness and connectors.
  • Look for damaged components and check for broken, bent, pushed out, or corroded connector’s pins.
  • This fix will take an estimated repair time of 1.0 hour.

The automobile fault code U0172 can be diagnosed and fixed within an estimated repair time of 1.0 hour. The cost of repair is influenced by the hourly rate charged by the auto repair shop, which typically ranges between $75 and $150 per hour. Therefore, the total cost of diagnosis and fixing the U0172 fault code will depend on the hourly rate charged by the auto repair shop and the estimated repair time.

The U0172 code is a Controller Area Network (CAN) fault code.

CAN is a vehicle bus standard designed to interconnect automotive devices without a host computer. The U0172 code sets when a periodic message from the Restraints System Sensor ‘C’ has not been received. CAN bus uses two dedicated wires for communication, CAN high and CAN low.

The Diagnostic Trouble Code (DTC) sets when there is a lost communication with Restraints System Sensor ‘C’. The CAN bus is not sensitive to inductive spikes, electrical fields, or other noise.

What are the possible causes of the u0172 fault code in relation to the airbag warning light and engine light being on?

If you’re experiencing an airbag warning light and engine light being on, it could be due to a faulty Restraints System Sensor ‘C’, an open or shorted harness, or a poor electrical connection in the circuit. To fix this, visually inspect the wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector’s pins.

How can one visually inspect the wiring harness and connectors to fix the u0172 fault code?

To fix the u0172 fault code, which causes the Air Bag Warning Light and Engine Light to turn on, one should visually inspect the wiring harness and connectors. This is because the fault may be due to a faulty Restraints System Sensor ‘C’, an open or shorted harness, or a poor electrical connection. To do this, check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.

What are the specific components that should be checked for damage when fixing the u0172 fault code?

If you’re dealing with a u0172 fault code, you’ll need to check the Restraints System Sensor ‘C’ and its related components. The symptoms of this issue include the Air Bag Warning Light and the Engine Light being on. The cause could be a faulty sensor, an open or shorted harness, or a poor electrical connection. To fix the problem, you should visually inspect the wiring harness and connectors, looking for any damage or corrosion. Additionally, check for broken, bent, or pushed out connector pins.

u0172 error fault code explained

If you see the Air Bag Warning Light and Engine Light ON, it could be due to a faulty Restraints System Sensor ‘C’, an open or shorted harness, or poor electrical connection.

Check the wiring harness and connectors for damage, broken or corroded pins.

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