[SOLVED] Fix U1889 Code: Hybrid Control Module Communication Lost

The automobile fault code U1889 indicates a problem with the Body Control Module (BCM) or Hybrid Control Module (HCM).

The most common symptom is the illumination of the Engine Light or Service Engine Soon Warning Light. The cause of this fault code could be a faulty BCM, open or shorted BCM harness, poor electrical connection in the BCM circuit, or a faulty HCM. The importance of repairing this issue lies in the fact that it can affect the overall performance of the vehicle.

The repair difficulty is moderate, and the repair time is estimated to be around 1.0 hour. To fix the issue, one should visually inspect the related wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector’s pins.

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

If you notice the Engine Light ON or Service Engine Soon Warning Light, it could be a sign of u1889 fault code. Here are the symptoms to look out for:

  • The U1889 fault code in an automobile can cause several symptoms, including the engine light turning on or the service engine soon warning light appearing.
  • Other symptoms may include issues with the transmission, such as difficulty shifting gears or the transmission slipping.
  • The vehicle may also experience a decrease in power or acceleration, and the engine may stall or hesitate during operation.
  • Additionally, the vehicle may experience issues with the fuel system, such as difficulty starting or a decrease in fuel efficiency.

The automobile fault code u1889 can be caused by a faulty BCM, open or shorted BCM harness, poor electrical connection in BCM circuit, or a faulty HCM.

  • The automobile fault code U1889 can be caused by a faulty Body Control Module (BCM).
  • It can also be caused by an open or shorted Body Control Module harness.
  • Another cause can be a poor electrical connection in the Body Control Module circuit.
  • Lastly, a faulty Hybrid Control Module (HCM) can also trigger this fault code.

To fix the u1889 automobile fault code, check the possible causes and inspect the related wiring harness, connectors, and components for damage.

  • To fix the automobile fault code u1889, first, check the possible causes listed above.
  • Then, 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 fault code U1889 is a communication error between the audio control module and the instrument cluster. The estimated repair time for this fault code is 1.0 hour.

The cost of fixing this fault code is influenced by the hourly rate charged by the auto repair shop, which is typically between $75 and $150 per hour. Other factors that may affect the cost of fixing this fault code include the severity of the issue, the type of vehicle, and the availability of replacement parts.

The U1889 code is related to the Hybrid Control Module.

It indicates that there is a loss of communication with the Body Control Module. This code is reported on a class 2 link to the scan tool by the Powertrain Control Module. It can be set by different modules connected to the class 2 and high-speed GMLAN serial data circuits.

The DTC will set when a node alive message has not been received from an identified module within the last 5 seconds after establishing class 2 serial data communication.

What are the possible causes of the u1889 automobile fault code?

If you’re experiencing the u1889 fault code, your engine light may be on. This could be due to a faulty Body Control Module (BCM), an open or shorted BCM harness, a poor electrical connection in the BCM circuit, or a faulty Hybrid Control Module (HCM). To fix the issue, check the possible causes listed above and visually inspect the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

How can I fix the u1889 automobile fault code?

If you’re experiencing the u1889 fault code, your engine light may be on. This could be due to a faulty Body Control Module (BCM), an open or shorted BCM harness, a poor electrical connection in the BCM circuit, or a faulty Hybrid Control Module (HCM). To fix the issue, visually inspect the wiring harness and connectors, checking for damaged components and broken, bent, pushed out, or corroded connector pins.

What should I visually inspect to troubleshoot the u1889 automobile fault code?

If you’re experiencing the u1889 automobile fault code, you may notice that your engine light is on. This could be due to a faulty Body Control Module (BCM), an open or shorted BCM harness, poor electrical connection in the BCM circuit, or a faulty Hybrid Control Module (HCM). To troubleshoot this issue, visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. Be sure to check the “Possible Causes” listed above to determine the best course of action for fixing the issue.

u1889 error fault code explained

If your engine light is on, it could be due to a faulty Body Control Module (BCM), an open or shorted BCM harness, a poor electrical connection in the BCM circuit, or a faulty Hybrid Control Module (HCM).

Visually inspect the wiring harness and connectors for damage and check for broken, bent, pushed out, or corroded connector pins.

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