OBD Guide
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U1297

Left Side BSI Radar Unit Lost Communication With Right Side BSI Radar Unit

U1297 is an OBD-II diagnostic trouble code meaning: Left Side BSI Radar Unit Lost Communication With Right Side BSI Radar Unit. Common causes: left or right bsi radar malfunction, broken or damaged wiring between radars. Estimated repair cost: $167–556.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$167–556 (est.)

Symptoms

  • Blind spot system does not work
  • Error message on the dashboard
  • BSI system indicator flashing
  • False alarms of the system

Causes

  • Left or right BSI radar malfunction
  • Broken or damaged wiring between radars
  • Poor contact in connectors
  • Problems with the control unit
  • Interference from other electronic devices

How to Fix

  1. Check radar connections and connectors
  2. Check the integrity of the wiring between the radars
  3. Scan the system for other errors
  4. Check the functionality of the radars
  5. Update control unit software
  6. Repair only from an authorized dealer

Related codes

U1298U1299U1300

FAQ

What does the U1297 code mean?

U1297 is an OBD-II diagnostic trouble code that indicates: Left Side BSI Radar Unit Lost Communication With Right Side BSI Radar Unit

What causes a U1297 error code?

The most common causes of U1297 include: Left or right BSI radar malfunction; Broken or damaged wiring between radars; Poor contact in connectors; Problems with the control unit.

How do I fix a U1297 diagnostic trouble code?

To fix U1297: Check radar connections and connectors. Check the integrity of the wiring between the radars. Scan the system for other errors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U1297?

Yes, but get it checked soon

How much does it cost to fix U1297?

The estimated repair cost for U1297 is $167–556. Actual cost depends on your vehicle, location, and labor rates.

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