U216B
Lost Communication With Rear Object Detection Control Module
U216B is an OBD-II diagnostic trouble code meaning: Lost Communication With Rear Object Detection Control Module. Common causes: open or short circuit in the module power supply circuit, damage to the wiring harness to the module. Estimated repair cost: $56–167.
Symptoms
- Rear parking sensors do not work
- No rear obstacle warning
- Error message on the dashboard
- Activation of the malfunction indicator lamp
- Disabling associated driver assistance systems
Causes
- Open or short circuit in the module power supply circuit
- Damage to the wiring harness to the module
- Rear detection module malfunction
- Problems with the CAN network
- Oxidation or corrosion of connector contacts
How to Fix
- Check the module power supply fuse
- Inspect connectors and wiring for damage
- Check power and ground at the module connector
- Scan the CAN network for errors
- Replace rear detection module if necessary
Related codes
FAQ
What does the U216B code mean?
U216B is an OBD-II diagnostic trouble code that indicates: Lost Communication With Rear Object Detection Control Module
What causes a U216B error code?
The most common causes of U216B include: Open or short circuit in the module power supply circuit; Damage to the wiring harness to the module; Rear detection module malfunction; Problems with the CAN network.
How do I fix a U216B diagnostic trouble code?
To fix U216B: Check the module power supply fuse. Inspect connectors and wiring for damage. Check power and ground at the module connector. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U216B?
Limited driving only, diagnose soon
How much does it cost to fix U216B?
The estimated repair cost for U216B is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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