AutoCodes – Generic – B1E3A

B1E3A Code - Sensor Power Circuit Voltage

Quick Answer

The object alarm detection system senses how close the vehicle is to an object. Common causes include Faulty Rear Object Sensor, Rear Object Sensor harness is open or shorted, Rear Object Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B1E3A indicates Sensor Power Circuit Voltage.
Common causes
Common causes include Faulty Rear Object Sensor, Rear Object Sensor harness is open or shorted, Rear Object Sensor circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 1,565
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 03, 2019
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Code B1E3A Description

The object alarm detection system senses how close the vehicle is to an object. The distance is determined by the 4 ultrasonic sensors located in the rear and front (if equipped) bumpers. The object detection system will notify the driver when backing up while parking at speeds less than 8 km/h (5 mph). The object detection system will use front and rear display indicators and the radio speakers for notification. The OBDII code sets when the object alarm module has detected the object alarm sensor supplied voltage circuit is below 7.2 volts or object alarm sensor supplied voltage circuit is above 9.2 volts.
OBDII Code B1E3A - Sensor Power Circuit Voltage - AutoCodes.com
B1E3A Code - Sensor Power Circuit Voltage

What are the Possible Causes of the DTC B1E3A?

  • Faulty Rear Object Sensor
  • Rear Object Sensor harness is open or shorted
  • Rear Object Sensor circuit poor electrical connection
  • Faulty Object Alarm Module

How to Fix the DTC B1E3A?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1E3A code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1E3A Code

1. What does the OBDII code B1E3A mean?

The B1E3A code indicates a problem with the sensor power circuit voltage, usually related to an electrical issue affecting a specific sensor in the vehicle.

2. What are the common symptoms of code B1E3A?

Symptoms may include illuminated warning lights on the dashboard, malfunctioning sensors, erratic vehicle behavior, or issues with specific systems like climate control or safety features.

3. What causes the B1E3A code to appear?

This code is typically caused by issues like a damaged sensor, loose or corroded wiring, poor electrical connections, or a malfunctioning control module.

4. How do I diagnose the B1E3A code?

Start by scanning the vehicle with an OBDII scanner to confirm the code, then inspect the sensor, wiring, and connectors for damage or corrosion. Check for proper voltage and continuity in the affected circuit.

5. Can I still drive with the B1E3A code?

While it may be possible to drive, it is not recommended as the affected sensor could impact critical vehicle functions, potentially compromising safety or performance.

6. How do I fix the B1E3A code?

Repairs may include replacing a faulty sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming the control module if necessary.

7. How much does it cost to fix the B1E3A code?

The cost depends on the root cause. Simple fixes like reconnecting wires may cost little to nothing, while sensor replacement or module reprogramming could range from $100 to $500 or more.

8. Can a dead battery cause the B1E3A code?

Yes, a weak or dead battery can cause voltage-related issues in the sensor power circuit, potentially triggering the B1E3A code.

9. What tools do I need to troubleshoot the B1E3A code?

You'll need an OBDII scanner, a multimeter for voltage testing, and basic tools to access and inspect wiring and connectors.

10. Can the B1E3A code clear itself?

The code might clear temporarily if the issue is intermittent, but it will likely return until the underlying problem is resolved.

Discuss the causes and fixes for B1E3A OBDII Code

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