Lost Communication With Side Obstacle Detection Control Module -- Left
What does U0152 mean?
The U0152 code means the vehicle's onboard diagnostic system has detected: Lost Communication With Side Obstacle Detection Control Module -- Left. This is a moderate severity code.
Common Symptoms
- Left blind spot monitoring not working
- Blind spot warning light on in mirror or dash
- Left side collision avoidance system disabled
- Lane change assist not functioning on left side
- Service blind spot monitoring message
Probable Causes (Ranked by Likelihood)
- Failed left side radar or ultrasonic sensor Very High
- Damaged wiring to left side detection module High
- Left rear bumper damage affecting sensor Moderate
- Sensor blocked by dirt, ice, or aftermarket parts Moderate
- Sensor misalignment after bumper repair Low
Step-by-Step Diagnostic Procedure
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Scan for DTCs in the blind spot monitoring and parking assist modules
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Inspect the left rear bumper area for damage or debris blocking the sensor
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Check wiring and connector at the left side detection module
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Verify the sensor is properly aligned -- especially if bumper was repaired
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Clean the sensor area and test again
Frequently Asked Questions
Can I drive with code U0152?
Yes, but use extra caution when changing lanes to the left. The blind spot monitoring for the left side is not functioning, so you must rely on mirrors and head checks.
What causes U0152?
The most common cause is a damaged left rear bumper sensor. Even minor parking lot bumps can misalign or damage the blind spot radar sensor behind the bumper cover.
Can dirt or snow cause U0152?
Yes. Blind spot sensors behind the rear bumper can be blocked by heavy dirt, mud, ice, or snow. Clean the rear bumper area and clear the code -- if it does not return, contamination was the cause.