AutoCodes – KIA – P06A4 KIA

P06A4 KIA Code - Sensor Reference Voltage 'D' 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: P06A4 KIA indicates Sensor Reference Voltage 'D' 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 6,762

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 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P06A4 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 P06A4 KIA - Sensor Reference Voltage 'D' Circuit Low - AutoCodes.com — P06A4 KIA Code - Sensor Reference Voltage 'D' Circuit Low

What does this mean?

What are the Possible Causes of the DTC P06A4 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 P06A4 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 P06A4 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 P06A4 KIA code?

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Need Help with the 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 P06A4 KIA Code

1. What are common symptoms of the OBDII code P06A4 for Sensor Reference Voltage 'D' Circuit Low in a KIA vehicle?

- Common symptoms include issues with engine performance, illuminated Check Engine Light, and potential stalling or rough idling.

2. What are the possible causes of the Sensor Reference Voltage 'D' Circuit Low code (P06A4) in a KIA?

- Possible causes may include a faulty sensor, damaged wiring or connectors, a defective powertrain control module (PCM), or low voltage in the circuit.

3. How can I diagnose the Sensor Reference Voltage 'D' Circuit Low error code in my KIA?

- A proper diagnosis requires using an OBDII scanner to retrieve the specific code, followed by checking the sensor connections, wiring, and voltage output using a multimeter.

4. Can I continue driving my KIA with the P06A4 trouble code present?

- It is not recommended to continue driving with the P06A4 code active, as it can lead to further problems with engine performance and potentially cause more severe issues over time.

5. How can I repair the Sensor Reference Voltage 'D' Circuit Low issue in my KIA?

- Repairing the issue involves identifying the root cause (sensor, wiring, PCM) and addressing it accordingly, which may involve replacing a faulty sensor, repairing damaged wiring, or reprogramming the PCM.

6. Will resetting the Check Engine Light resolve the P06A4 error code in my KIA?

- Simply resetting the Check Engine Light will not fix the underlying issue causing the P06A4 code. It is crucial to diagnose and repair the root cause to prevent the code from reoccurring.

7. Is the Sensor Reference Voltage 'D' Circuit Low problem in a KIA a common issue?

- While not as common as some other OBDII codes, the P06A4 code can occur in KIA vehicles due to sensor or electrical issues, requiring proper diagnosis and repair.

8. How much does it typically cost to repair the Sensor Reference Voltage 'D' Circuit Low fault in a KIA?

- The cost of repairing the P06A4 code can vary depending on the specific cause, parts needed, and labor rates, but it is recommended to consult a professional mechanic for an accurate estimate.

9. Can a DIY enthusiast fix the Sensor Reference Voltage 'D' Circuit Low issue in a KIA?

- Depending on the individual's experience and tools available, some DIY enthusiasts may be able to diagnose and repair the P06A4 code, but it is essential to have the necessary knowledge and skills to do so safely and effectively.

10. How urgent is it to address the Sensor Reference Voltage 'D' Circuit Low code in my KIA?

- While the severity may vary, addressing the P06A4 code promptly is recommended to prevent potential engine performance issues and further damage to components in the vehicle.