OBD Guide
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B2703

Front Sonar Sensor Right Outer Harness

B2703 is an OBD-II diagnostic trouble code meaning: Front Sonar Sensor Right Outer Harness. Common causes: broken or damaged wiring harness, poor contact in the sensor connector. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Incorrect operation of the parking radar
  • Parking assistance disabled
  • False alarms or lack of response to obstacles

Causes

  • Broken or damaged wiring harness
  • Poor contact in the sensor connector
  • Malfunction of the parking radar sensor itself
  • Short circuit in the circuit

How to Fix

  1. Check the integrity of the wiring harness to the right external sensor
  2. Inspect the sensor connector for corrosion or damage.
  3. Check the sensor itself for functionality
  4. Replace sensor or wiring harness if necessary

Related codes

B2702B2704B2705

FAQ

What does the B2703 code mean?

B2703 is an OBD-II diagnostic trouble code that indicates: Front Sonar Sensor Right Outer Harness

What causes a B2703 error code?

The most common causes of B2703 include: Broken or damaged wiring harness; Poor contact in the sensor connector; Malfunction of the parking radar sensor itself; Short circuit in the circuit.

How do I fix a B2703 diagnostic trouble code?

To fix B2703: Check the integrity of the wiring harness to the right external sensor. Inspect the sensor connector for corrosion or damage.. Check the sensor itself for functionality. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2703?

Limited driving only, diagnose soon

How much does it cost to fix B2703?

The estimated repair cost for B2703 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat