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Engine-Codes – Suzuki – P0629 Suzuki

P0629 Suzuki Code - Fuel Pump Relay High Voltage

Quick Answer

The P0629 diagnostic trouble code for Suzuki vehicles refers to the fuel pump relay high voltage. Common causes include Faulty fuel pump relay, Short circuit in the fuel pump relay circuit, Wiring issues in the fuel pump relay circuit. 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
P0629 Suzuki indicates Fuel Pump Relay High Voltage.
Common causes
Common causes include Faulty fuel pump relay, Short circuit in the fuel pump relay circuit, Wiring issues in the fuel pump relay circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0629 Suzuki Description

The P0629 diagnostic trouble code for Suzuki vehicles refers to the fuel pump relay high voltage. This code indicates that the powertrain control module (PCM) has detected that the voltage from the fuel pump relay circuit is higher than normal. The fuel pump relay is responsible for controlling the fuel pump's operation, which is essential for delivering fuel from the tank to the engine. When the voltage in the fuel pump relay circuit is too high, it can lead to various issues with the fuel delivery system.

OBDII Code P0629 Suzuki - Fuel Pump Relay High Voltage
P0629 Suzuki Code - Fuel Pump Relay High Voltage

Common Causes of P0629 Suzuki

  1. Faulty fuel pump relay
  2. Short circuit in the fuel pump relay circuit
  3. Wiring issues in the fuel pump relay circuit
  4. PCM malfunction
  5. Electrical system issues

Symptoms of P0629 Suzuki

  1. Engine misfires or hesitation during acceleration
  2. Difficulty starting the vehicle
  3. Reduced fuel efficiency
  4. Illumination of the check engine light
  5. Vehicle stalling or shutting off unexpectedly

How to Fix P0629 Suzuki

  1. Use a scan tool to retrieve the trouble codes and identify the specific cause of the P0629 code.
  2. Inspect the fuel pump relay and related wiring for any visible signs of damage or corrosion.
  3. Test the fuel pump relay for proper function using a multimeter.
  4. Replace the faulty fuel pump relay if necessary and clear the trouble code from the PCM.
  5. Test drive the vehicle to ensure that the issue has been resolved and that the check engine light does not reappear.

Cost to Fix P0629 Suzuki

The cost of repairing a P0629 code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the cost of replacing a fuel pump relay can range from $50 to $150, while labor costs can add another $50 to $100. However, these prices are just estimates, and actual repair costs may be higher or lower depending on various factors. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate based on your vehicle's make and model.

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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 P0629 Suzuki Code

1. What are the common symptoms of OBDII code P0629 in a Suzuki related to the fuel pump relay high voltage issue?

- Common symptoms include difficulty starting the vehicle, engine stalling, and the fuel pump running continuously.

2. What are the possible causes of OBDII code P0629 in a Suzuki?

- The code P0629 in a Suzuki is typically caused by a faulty fuel pump relay, a wiring issue, or a malfunctioning fuel pump control module.

3. How can I diagnose the OBDII code P0629 in my Suzuki related to the fuel pump relay high voltage problem?

- Diagnose the OBDII code P0629 by checking the fuel pump relay, inspecting the wiring for any damage or corrosion, and testing the fuel pump control module.

4. Can I still drive my Suzuki with the OBDII code P0629 related to the fuel pump relay high voltage issue?

- It is not recommended to drive your Suzuki with the OBDII code P0629, as it can lead to potential fuel pump failure or engine stalling.

5. Are there any repair tips for fixing the OBDII code P0629 in a Suzuki caused by the fuel pump relay high voltage problem?

- When fixing the OBDII code P0629, make sure to replace the faulty fuel pump relay, repair any damaged wiring, and reset the trouble codes after the repair.

6. How urgent is it to address the OBDII code P0629 in a Suzuki related to the fuel pump relay high voltage issue?

- It is important to address the OBDII code P0629 promptly to prevent potential fuel pump failure, engine stalling, or other related issues.

7. Can a DIY enthusiast fix the OBDII code P0629 in a Suzuki caused by the fuel pump relay high voltage issue?

- If you have the necessary tools and knowledge, you may be able to replace the fuel pump relay yourself. However, it's recommended to consult a professional mechanic for proper diagnosis and repair.

8. Is it expensive to repair the OBDII code P0629 in a Suzuki related to the fuel pump relay high voltage problem?

- The cost of repairing the OBDII code P0629 in a Suzuki can vary depending on the exact cause of the issue. Replacing a faulty fuel pump relay is generally more affordable compared to other potential repairs.

9. Can weather conditions affect the occurrence of OBDII code P0629 in a Suzuki due to the fuel pump relay high voltage issue?

- Extreme weather conditions, such as high temperatures, can sometimes exacerbate issues related to the fuel pump relay high voltage in a Suzuki, leading to the triggering of the OBDII code P0629.

10. How can I prevent the OBDII code P0629 from reoccurring in my Suzuki after repairing the fuel pump relay high voltage issue?

- To prevent the OBDII code P0629 from reoccurring, regularly inspect and maintain your Suzuki's fuel system components, including the fuel pump relay, wiring, and control module.

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