AutoCodes – Dodge – P06A3 Dodge

P06A3 Dodge Code - Sensor Reference Voltage 'D' Circuit/Open

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
P06A3 Dodge indicates Sensor Reference Voltage 'D' Circuit/Open.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 1,255
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 08, 2019
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Code P06A3 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 P06A3 Dodge - Sensor Reference Voltage 'D' Circuit/Open - AutoCodes.com
P06A3 Dodge Code - Sensor Reference Voltage 'D' Circuit/Open

What are the Possible Causes of the DTC P06A3 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 P06A3 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 P06A3 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 P06A3 Dodge Code

1. What does the OBDII code P06A3 mean on a Dodge vehicle?

P06A3 indicates an issue with the Sensor Reference Voltage 'D' Circuit, specifically an open or faulty circuit that prevents proper voltage delivery to certain sensors.

2. What are common symptoms of the P06A3 code on a Dodge?

Symptoms may include the check engine light turning on, poor engine performance, reduced fuel efficiency, or erratic sensor readings.

3. What causes the P06A3 code to appear on a Dodge?

Common causes include damaged or corroded wiring, a faulty sensor, a malfunctioning powertrain control module (PCM), or a poor ground connection.

4. Can I drive my Dodge with the P06A3 code?

While the vehicle may still be drivable, it is not recommended as it could lead to further damage or poor performance issues.

5. How do I diagnose the P06A3 code on a Dodge?

Start by inspecting the wiring and connectors for damage or corrosion, test the sensor reference voltage with a multimeter, and verify the function of the PCM.

6. What sensors rely on the Sensor Reference Voltage 'D' Circuit in a Dodge?

The specific sensors can vary by model but may include throttle position sensors, manifold absolute pressure (MAP) sensors, and others requiring a stable 5V reference.

7. How do I fix the P06A3 code on a Dodge?

Repairs may involve replacing damaged wiring, cleaning corroded connections, repairing or replacing the faulty sensor, or reprogramming/replacing the PCM.

8. How much does it cost to fix a P06A3 code on a Dodge?

Costs vary depending on the issue but typically range from $50 for wiring repairs to $600+ if the PCM needs replacement.

9. Can a low battery cause the P06A3 code on a Dodge?

Yes, a weak or failing battery can sometimes cause voltage-related issues, including triggering the P06A3 code.

10. Will clearing the code with an OBDII scanner fix the P06A3 issue?

Clearing the code may turn off the check engine light temporarily, but the underlying issue must be resolved to prevent the code from returning.

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