AutoCodes – Chevrolet – B1591 Chevrolet

B1591 Chevrolet Code - Mirror Vertical Position Sensor Voltage

Quick Answer

The Left Mirror and the Right Mirror Vertical Position Sensors are Potentiometers. Common causes include Faulty Left Mirror or Right Mirror, Left Mirror or Right Mirror harness is open or shorted, Left Mirror or Right Mirror 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: B1591 Chevrolet indicates Mirror Vertical Position Sensor Voltage.
Common causes: Common causes include Faulty Left Mirror or Right Mirror, Left Mirror or Right Mirror harness is open or shorted, Left Mirror or Right Mirror 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 909

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 19, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1591 Chevrolet Description

The Left Mirror and the Right Mirror Vertical Position Sensors are Potentiometers. The Driver Door Module (DDM) and the Passenger Door Module (PFDM) determine the vertical position of the mirrors based on the signal voltage from these sensors. The code will be set when the signal voltage of the mirror vertical position sensor is above or below the range limits, within 10%, for 30 seconds in the requested position. The voltage range limits depend upon what the actual voltage of the 5 volt reference circuit is, and will vary from vehicle to vehicle and from module to module.

OBDII Code B1591 Chevrolet - Mirror Vertical Position Sensor Voltage - AutoCodes.com — B1591 Chevrolet Code - Mirror Vertical Position Sensor Voltage

What does this mean?

What are the Possible Causes of the DTC B1591 Chevrolet?

Faulty Left Mirror or Right Mirror
Left Mirror or Right Mirror harness is open or shorted
Left Mirror or Right Mirror circuit poor electrical connection

How to Fix the DTC B1591 Chevrolet?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1591 Chevrolet 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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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 B1591 Chevrolet Code

1. What are the common symptoms of OBDII code B1591 in a Chevrolet related to the Mirror Vertical Position Sensor Voltage?

The common symptoms include erratic or incorrect movement of the mirror, failure of mirror adjustment controls, or a warning light on the dashboard.

2. What are the possible causes of OBDII code B1591 related to the Mirror Vertical Position Sensor Voltage in a Chevrolet?

Possible causes may include a faulty mirror vertical position sensor, damaged wiring or connectors, a malfunctioning mirror control module, or electrical issues.

3. How can I diagnose the issue causing OBDII code B1591 in my Chevrolet related to the Mirror Vertical Position Sensor Voltage?

Diagnosing the issue usually involves checking the sensor's voltage output, inspecting the wiring and connectors for damage, and testing the mirror control module for proper functioning.

4. What are some repair tips for fixing OBDII code B1591 in a Chevrolet due to Mirror Vertical Position Sensor Voltage issues?

Repair tips may include replacing the faulty mirror vertical position sensor, repairing or replacing damaged wiring or connectors, resetting the mirror control module, or seeking professional assistance if needed.

5. Can I drive my Chevrolet with OBDII code B1591 related to the Mirror Vertical Position Sensor Voltage present?

It is generally not recommended to drive the vehicle with this code present, as it may affect the proper functioning of the mirror adjustment system and compromise safety.

6. How much does it typically cost to repair OBDII code B1591 in a Chevrolet caused by Mirror Vertical Position Sensor Voltage problems?

The cost of repair can vary depending on the specific issue, but it may involve parts replacement, labor costs, and diagnostic fees. It is advisable to consult a mechanic for an accurate estimate.

7. Are there any preventive measures to avoid OBDII code B1591 related to Mirror Vertical Position Sensor Voltage in a Chevrolet?

Regular maintenance checks, including inspecting the mirror adjustment system and related components, can help prevent issues leading to this OBDII code.

8. Can a DIY enthusiast fix OBDII code B1591 in a Chevrolet related to Mirror Vertical Position Sensor Voltage?

Depending on the individual's skill level and access to tools, a DIY enthusiast may be able to diagnose and repair this issue. However, it is crucial to have the necessary knowledge and expertise to avoid causing further damage.

9. How urgent is it to address OBDII code B1591 in a Chevrolet due to Mirror Vertical Position Sensor Voltage problems?

While the severity may vary, addressing this code promptly is recommended to ensure proper functioning of the mirror adjustment system and prevent potential safety hazards.

10. Is OBDII code B1591 specific to Chevrolet vehicles, or can it occur in other car makes and models?

While this specific code may be associated with Chevrolet vehicles, similar issues related to mirror vertical position sensor voltage can occur in other car makes and models that are equipped with similar mirror adjustment systems.