AutoCodes – Dodge – P06A4 Dodge

P06A4 Dodge 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 Dodge 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 3,096

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 Dodge 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 Dodge - Sensor Reference Voltage 'D' Circuit Low - AutoCodes.com — P06A4 Dodge Code - Sensor Reference Voltage 'D' Circuit Low

What does this mean?

What are the Possible Causes of the DTC P06A4 Dodge?

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 Dodge?

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 Dodge 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 P06A4 Dodge Code

1. What are the common symptoms of OBDII code P06A4 in a Dodge?

- Common symptoms include engine misfires, rough idling, reduced engine performance, and the illumination of the Check Engine Light.

2. What can cause the Sensor Reference Voltage 'D' Circuit Low code in a Dodge?

- Possible causes include a faulty sensor, damaged wiring or connectors, a defective Engine Control Module (ECM), or a low voltage condition in the circuit.

3. How can I diagnose the Sensor Reference Voltage 'D' Circuit Low issue in my Dodge?

- Diagnosis typically involves using a scan tool to retrieve the OBDII code, checking the sensor's voltage using a multimeter, inspecting the wiring and connectors for damage, and testing the ECM if necessary.

4. Can I continue driving my Dodge with the P06A4 fault code?

- It is not recommended to drive your vehicle with this fault code present, as it can lead to further engine damage or poor performance. It is best to address the issue promptly.

5. Is it possible to repair the Sensor Reference Voltage 'D' Circuit Low problem myself?

- While some experienced DIYers may be able to troubleshoot and repair this issue, it is recommended to seek professional help, especially when dealing with electronic components and wiring.

6. How much does it typically cost to repair the P06A4 code in a Dodge?

- The cost of repairing this issue can vary depending on the exact cause of the problem. It may range from a simple sensor replacement to more extensive wiring or ECM repairs, potentially costing a few hundred dollars.

7. Are there any preventative measures to avoid the Sensor Reference Voltage 'D' Circuit Low code?

- Regularly scheduled maintenance, including checking the condition of sensors, wiring, and connectors, can help prevent issues like this from occurring. Keeping up with recommended service intervals is crucial.

8. Can a low battery voltage trigger the P06A4 fault code in a Dodge?

- Yes, a low battery voltage or a weak charging system can sometimes cause voltage-related issues in the vehicle, leading to the Sensor Reference Voltage 'D' Circuit Low code.

9. Will resetting the fault codes make the Check Engine Light go away permanently?

- Resetting the fault codes may temporarily turn off the Check Engine Light, but if the underlying issue causing the P06A4 code is not resolved, the light is likely to come back on after some driving cycles.

10. How urgent is it to address the Sensor Reference Voltage 'D' Circuit Low issue in a Dodge?

- While your vehicle may still be operable with this fault code, it is important to address the issue promptly to prevent further damage and ensure optimal engine performance.