AutoCodes – Suzuki – P0651 Suzuki

P0651 Suzuki Code - 5 Volt Reference Voltage Circuit

Quick Answer

The control module has 2 internal 5-volt reference buses called "5-volt reference 1" and"5-volt reference 2". Common causes include Faulty Engine Control Module (ECM), ECM harness is open or shorted, ECM 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: P0651 Suzuki indicates 5 Volt Reference Voltage Circuit.
Common causes: Common causes include Faulty Engine Control Module (ECM), ECM harness is open or shorted, ECM 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 10,054

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 02, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0651 Suzuki Description

The control module has 2 internal 5-volt reference buses called "5-volt reference 1" and"5-volt reference 2". Each reference bus provided 5-volt reference circuit for more than one sensor. Therefore, a fault condition on one 5-volt reference circuit will affect the other 5-volt reference circuits connected to the reference bus. The control module monitors the voltage on the 5-volt reference buses.

OBDII Code P0651 Suzuki - 5 Volt Reference Voltage Circuit - AutoCodes.com — P0651 Suzuki Code - 5 Volt Reference Voltage Circuit

What does this mean?

What are the Possible Causes of the DTC P0651 Suzuki?

Faulty Engine Control Module (ECM)
ECM harness is open or shorted
ECM circuit poor electrical connection
Shorted sensor on 5 volt circuit

How to Fix the DTC P0651 Suzuki?

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 P0651 Suzuki 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.

Need more information about the P0651 Suzuki code?

Need more information on how to fix the P0651 Suzuki code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0651 Suzuki code diagnosed by a professional: Find a repair shop in your area

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 P0651 Suzuki Code

1. What is OBDII code P0651 on a Suzuki related to?

The P0651 code on a Suzuki indicates a problem with the 5-volt reference voltage circuit.

2. What are the common symptoms of OBDII code P0651 on a Suzuki?

Common symptoms of code P0651 may include engine stalling, rough idling, poor acceleration, and in some cases, the vehicle may not start at all.

3. What are the possible causes of OBDII code P0651 on a Suzuki?

Possible causes of code P0651 include a faulty Engine Control Module (ECM), damaged wiring or connectors in the 5-volt reference circuit, or a short to ground in the circuit.

4. How can I diagnose the 5-volt reference voltage circuit issue triggering OBDII code P0651 on my Suzuki?

To diagnose the issue, you can perform a visual inspection of the wiring and connectors, test the 5-volt reference circuit for continuity and voltage, and check for any shorts to ground in the circuit.

5. Can I still drive my Suzuki with OBDII code P0651 present?

It is not recommended to drive your Suzuki with the P0651 code present, as it can lead to further damage to the engine and other components. It's best to address the issue promptly.

6. Is it safe to reset the OBDII code P0651 on my Suzuki using a diagnostic tool?

While you can reset the code using a diagnostic tool, it is important to address the underlying issue causing the P0651 code to prevent it from reoccurring.

7. Will replacing the Engine Control Module (ECM) fix OBDII code P0651 on my Suzuki?

Replacing the ECM may resolve the P0651 code if the issue is related to a faulty ECM. However, it's essential to diagnose the problem accurately before replacing any components.

8. How much does it typically cost to repair OBDII code P0651 on a Suzuki?

The cost of repairing the P0651 code on a Suzuki can vary depending on the underlying cause. It's recommended to consult a professional mechanic for a proper diagnosis and cost estimate.

9. Can a DIY enthusiast repair OBDII code P0651 on a Suzuki?

While some DIY enthusiasts may be able to diagnose and repair the P0651 code, it involves dealing with the vehicle's electrical system, which can be complex. It's advisable to seek professional help if you're unsure.

10. How long does it take to repair OBDII code P0651 on a Suzuki?

The repair time for the P0651 code on a Suzuki can vary based on the cause of the issue and the expertise of the mechanic. It's best to consult with a professional for a more accurate estimate.