OBD Guide

C1AE9

Ultrasonic Sensor Rear Right Corner Sensor

C1AE9 is an OBD-II diagnostic trouble code meaning: Ultrasonic Sensor Rear Right Corner Sensor. Common causes: mechanical damage to the sensor, sensor contamination. 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 system
  • False sensor alarms
  • No audible or visual obstacle warnings

Causes

  • Mechanical damage to the sensor
  • Sensor contamination
  • Open or short circuit in wiring harness
  • Contact corrosion
  • Malfunction of the parking system control unit

How to Fix

  1. Visual inspection of the sensor for damage and contamination
  2. Cleaning the sensor from dirt and debris
  3. Checking the integrity of the wiring harness and contacts
  4. Replace the sensor if necessary
  5. Resetting the error using an OBD-II scanner

Related codes

FAQ

What does the C1AE9 code mean?

C1AE9 is an OBD-II diagnostic trouble code that indicates: Ultrasonic Sensor Rear Right Corner Sensor

What causes a C1AE9 error code?

The most common causes of C1AE9 include: Mechanical damage to the sensor; Sensor contamination; Open or short circuit in wiring harness; Contact corrosion.

How do I fix a C1AE9 diagnostic trouble code?

To fix C1AE9: Visual inspection of the sensor for damage and contamination. Cleaning the sensor from dirt and debris. Checking the integrity of the wiring harness and contacts. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1AE9?

Limited driving only, diagnose soon

How much does it cost to fix C1AE9?

The estimated repair cost for C1AE9 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat