Code help. U0422-71

[scoobydont]

Thanks in advance, need some help diagnosing a code. U0422-71 Invalid Data Received From Body Control Module - Actuator Stuck.

 

[Doubeleive]

Thanks in advance, need some help diagnosing a code. U0422-71 Invalid Data Received From Body Control Module - Actuator Stuck.




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[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

Some items to review and work through.....

The code U0422-71 indicates an invalid data stream from the Body Control Module (BCM) and is related to a stuck actuator. This usually suggests an issue with communication between the BCM and the actuator, potentially due to wiring problems, BCM faults, or faulty sensors.

Here's a breakdown of the likely causes:

• Wiring Problems: Damaged or poorly connected wiring between the BCM and the actuator can cause the invalid data stream.
• BCM Fault: The BCM itself might be faulty or experiencing a software issue.
• Faulty Sensors: Sensors providing data to the BCM could be sending incorrect information.
• Actuator Failure: The actuator itself might be stuck, preventing it from receiving or transmitting the correct data.
  

Troubleshooting Steps:

1. Inspect Wiring: Carefully check the wiring harness and connectors between the BCM and the actuator for damage, corrosion, or loose connections.
   
   
2. Check BCM: If wiring is good, the BCM might need to be replaced or reprogrammed.
   
   
3. Test Sensors: Check the sensors providing data to the BCM for functionality.
   
   
4. Actuator Inspection: If wiring and BCM are good, the actuator itself might need to be replaced.
   
   
5. Battery and Alternator: Low battery voltage can also cause communication problems, so ensure your battery and alternator are functioning correctly.