OBD Guide

B128E

Park Assist Sensor 1

B128E is an OBD-II diagnostic trouble code meaning: Park Assist Sensor 1. Common causes: mechanical damage to parking sensor 1, open or shorted sensor wiring. 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 assistant system
  • No audible or visual warnings when parking
  • False alarms of the system

Causes

  • Mechanical damage to parking sensor 1
  • Open or shorted sensor wiring
  • Malfunction of the parking aid control unit
  • Contamination or damage to the sensor surface

How to Fix

  1. Check the integrity of parking sensor 1
  2. Check the condition of the sensor wiring and connectors
  3. Clean the surface of the sensor from dirt
  4. Replace sensor if necessary
  5. Check the operation of the parking assistant system after repair

Related codes

FAQ

What does the B128E code mean?

B128E is an OBD-II diagnostic trouble code that indicates: Park Assist Sensor 1

What causes a B128E error code?

The most common causes of B128E include: Mechanical damage to parking sensor 1; Open or shorted sensor wiring; Malfunction of the parking aid control unit; Contamination or damage to the sensor surface.

How do I fix a B128E diagnostic trouble code?

To fix B128E: Check the integrity of parking sensor 1. Check the condition of the sensor wiring and connectors. Clean the surface of the sensor from dirt. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B128E?

Limited driving only, diagnose soon

How much does it cost to fix B128E?

The estimated repair cost for B128E is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat