AutoCodes – KIA – P0698 KIA

P0698 KIA Code - Sensor Reference Voltage 'C' Circuit Low

Quick Answer

The control module has internal 5-volt reference buses called "5-volt reference". 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: P0698 KIA indicates Sensor Reference Voltage 'C' Circuit Low.
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 11,223

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 06, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0698 KIA Description

The control module has internal 5-volt reference buses called "5-volt reference". 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 P0698 KIA - Sensor Reference Voltage 'C' Circuit Low - AutoCodes.com — P0698 KIA Code - Sensor Reference Voltage 'C' Circuit Low

What does this mean?

What are the Possible Causes of the DTC P0698 KIA?

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 P0698 KIA?

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 P0698 KIA 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 P0698 KIA code?

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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 P0698 KIA Code

1. What are the common symptoms of OBDII code P0698 in a KIA vehicle?

- Common symptoms include engine stalling, rough idling, poor acceleration, and illuminated Check Engine Light.

2. What does the OBDII code P0698 in a KIA indicate?

- The code P0698 indicates a problem with the Sensor Reference Voltage 'C' Circuit being too low.

3. What are the possible causes of OBDII code P0698 in a KIA?

- Possible causes include a faulty sensor, damaged wiring or connectors, low battery voltage, or a problem with the Engine Control Module (ECM).

4. How can I diagnose the Sensor Reference Voltage 'C' Circuit Low issue in a KIA?

- Diagnose the issue by using a diagnostic scanner to retrieve and analyze the fault codes, inspecting the wiring and connections for any damage, and testing the sensor for proper voltage output.

5. Can I drive my KIA with the OBDII code P0698 present?

- It is not recommended to drive your vehicle with the P0698 code present, as it can lead to further damage and potential safety hazards.

6. How do I repair the Sensor Reference Voltage 'C' Circuit Low issue in my KIA?

- Repair the issue by addressing the root cause, such as replacing a faulty sensor, repairing damaged wiring, or resetting the ECM.

7. Is it possible to reset the OBDII code P0698 in a KIA without fixing the underlying issue?

- Resetting the code without fixing the underlying issue will only temporarily turn off the Check Engine Light, as the problem will likely reoccur.

8. How much does it cost to fix the Sensor Reference Voltage 'C' Circuit Low problem in a KIA?

- The cost of fixing the issue can vary depending on the root cause, but it may involve replacing a sensor, repairing wiring, or resetting the ECM, which can range from moderate to expensive.

9. Can a DIY enthusiast fix the OBDII code P0698 in a KIA?

- Depending on your skill level and access to tools, some DIY enthusiasts may be able to address simpler causes like a loose connection, but complex issues may require professional assistance.

10. How long does it take to repair the Sensor Reference Voltage 'C' Circuit Low issue in a KIA?

- The repair time can vary based on the specific cause and complexity of the problem, ranging from a quick fix for minor issues to a more extensive repair that may take several hours.