OBD Guide
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B270D

Front Sonar Sensor Left Inner harness

B270D is an OBD-II diagnostic trouble code meaning: Front Sonar Sensor Left Inner harness. Common causes: damage to the sensor wiring harness, parking sensor malfunction. 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 parking sensors
  • No sound signal when obstacles are detected
  • False alarms of the system

Causes

  • Damage to the sensor wiring harness
  • Parking sensor malfunction
  • Poor contact in the sensor connector
  • Short circuit in the circuit
  • Problems with the parking sensor control unit

How to Fix

  1. Check the integrity of the sensor wiring harness
  2. Inspect connectors for oxidation or damage
  3. Test the parking sensor
  4. Check the parking sensor control unit
  5. Replace faulty components

Related codes

B270EB270FB2710

FAQ

What does the B270D code mean?

B270D is an OBD-II diagnostic trouble code that indicates: Front Sonar Sensor Left Inner harness

What causes a B270D error code?

The most common causes of B270D include: Damage to the sensor wiring harness; Parking sensor malfunction; Poor contact in the sensor connector; Short circuit in the circuit.

How do I fix a B270D diagnostic trouble code?

To fix B270D: Check the integrity of the sensor wiring harness. Inspect connectors for oxidation or damage. Test the parking sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B270D?

Limited driving only, diagnose soon

How much does it cost to fix B270D?

The estimated repair cost for B270D is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat