AutoCodes – Buick – C0625 Buick

C0625 Buick Code - Left Rear Position Sensor Circuit

Quick Answer

The Suspension Control Module supplies a 5 V reference signal to each Suspension Position Sensor. Common causes include Faulty Left Rear Position Sensor, Left Rear Position Sensor harness is open or shorted, Left Rear Position 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: C0625 Buick indicates Left Rear Position Sensor Circuit.
Common causes: Common causes include Faulty Left Rear Position Sensor, Left Rear Position Sensor harness is open or shorted, Left Rear Position 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 2,284

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 Jul 16, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0625 Buick Description

The Suspension Control Module supplies a 5 V reference signal to each Suspension Position Sensor. The Suspension Position Sensors supply a signal of 0.35–4.75 V to the Suspension Control Module which represents the position between the body and the wheel. The sensors are also grounded through the Suspension Control Module. The Diagnostic Trouble Code (DTC) will be set when the Suspension Control Module measures a Suspension Position Sensor signal less than 0.35 V or greater than 4.75 V for more than 5 s while the vehicle is operated under normal driving conditions.

OBDII Code C0625 Buick - Left Rear Position Sensor Circuit - AutoCodes.com — C0625 Buick Code - Left Rear Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC C0625 Buick?

Faulty Left Rear Position Sensor
Left Rear Position Sensor harness is open or shorted
Left Rear Position Sensor circuit poor electrical connection
Faulty Suspension Control Module

How to Fix the DTC C0625 Buick?

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 C0625 Buick 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 C0625 Buick Code

1. What does the OBDII code C0625 mean on a Buick?

The code C0625 indicates an issue with the left rear position sensor circuit, which monitors the suspension height or position of the left rear wheel.

2. What are the common symptoms of a C0625 code on a Buick?

Symptoms may include an illuminated suspension warning light, uneven ride height, poor ride quality, or the air suspension system not functioning properly.

3. What causes the C0625 code to appear on a Buick?

Common causes include a faulty left rear position sensor, damaged wiring or connectors, corrosion in the circuit, or a failure in the suspension control module.

4. How can I diagnose the C0625 code on my Buick?

Start by inspecting the left rear position sensor and its wiring for damage or corrosion. Use a multimeter to test the sensorâ€™s electrical circuit and confirm continuity.

5. Can I drive my Buick with a C0625 code?

While the vehicle may still be drivable, ignoring this code can lead to poor ride quality and uneven suspension performance, potentially causing further damage.

6. How do I fix the C0625 code on my Buick?

Repairs may involve replacing the left rear position sensor, repairing or replacing damaged wiring or connectors, or cleaning corroded terminals in the circuit.

7. How much does it cost to fix the C0625 code on a Buick?

The cost depends on the specific issue but typically ranges from $100 to $300 for parts and labor, depending on whether the sensor, wiring, or module needs replacement.

8. What tools are needed to repair a C0625 code on a Buick?

Common tools include a multimeter, a scan tool or OBDII reader, and basic hand tools to access and replace the sensor or repair wiring.

9. Can a faulty suspension control module cause the C0625 code?

Yes, a malfunctioning suspension control module can contribute to the C0625 code if it fails to process signals from the left rear position sensor correctly.

10. How do I prevent the C0625 code from reoccurring on my Buick?

Regularly inspect the suspension system, clean electrical connectors to prevent corrosion, and replace worn-out components as part of routine maintenance.