AutoCodes – Dodge – P1618 Dodge

P1618 Dodge Code - Sensor Reference Voltage 1 Erratic

Quick Answer

With the ignition ON, the Diagnostic Trouble Code (DTC) will be set when the Powertrain Control Module (PCM) detects that the 5-Volt supply circuit voltage is below the minimum acceptable value. Common causes include Faulty 5-Volt Sensor, 5-Volt Sensor harness is open or shorted, 5-Volt Sensor 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: P1618 Dodge indicates Sensor Reference Voltage 1 Erratic.
Common causes: Common causes include Faulty 5-Volt Sensor, 5-Volt Sensor harness is open or shorted, 5-Volt Sensor 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 6,318

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 Mar 23, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1618 Dodge Description

With the ignition ON, the Diagnostic Trouble Code (DTC) will be set when the Powertrain Control Module (PCM) detects that the 5-Volt supply circuit voltage is below the minimum acceptable value.

OBDII Code P1618 Dodge - Sensor Reference Voltage 1 Erratic - AutoCodes.com — P1618 Dodge Code - Sensor Reference Voltage 1 Erratic

What does this mean?

What are the Possible Causes of the DTC P1618 Dodge?

Faulty 5-Volt Sensor
5-Volt Sensor harness is open or shorted
5-Volt Sensor circuit poor electrical connection

How to Fix the DTC P1618 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 P1618 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 P1618 Dodge Code

1. What are common symptoms of OBDII code P1618 (Dodge) Sensor Reference Voltage 1 Erratic?

- Common symptoms include engine stalling, rough idling, poor acceleration, and potential issues with the vehicle's electrical systems.

2. What are the possible causes of OBDII code P1618 (Dodge) Sensor Reference Voltage 1 Erratic?

- Possible causes include a faulty sensor, wiring issues, a bad connection, or problems with the vehicle's powertrain control module (PCM).

3. How can I diagnose the cause of OBDII code P1618 (Dodge) Sensor Reference Voltage 1 Erratic?

- Diagnosing the issue may require using a scan tool to read the code and check for any other related codes. Additionally, inspecting the sensor, wiring, and connections for any visible damage is recommended.

4. Can I drive my vehicle with OBDII code P1618 (Dodge) Sensor Reference Voltage 1 Erratic?

- It is not recommended to drive your vehicle with this code as it can lead to further damage and potential safety hazards. It is best to address the issue promptly.

5. What repair tips can help fix OBDII code P1618 (Dodge) Sensor Reference Voltage 1 Erratic?

- Repair tips may include checking and repairing any damaged wiring, ensuring proper sensor connections, and possibly replacing the sensor or the PCM if necessary.

6. Is it possible to reset OBDII code P1618 (Dodge) Sensor Reference Voltage 1 Erratic without fixing the underlying issue?

- While clearing the code may temporarily turn off the check engine light, it will not fix the underlying issue causing the code. It is important to address the root cause of the problem.

7. How much does it typically cost to repair OBDII code P1618 (Dodge) Sensor Reference Voltage 1 Erratic?

- The cost of repairs can vary depending on the exact cause of the issue. It may range from a simple sensor replacement to more extensive wiring repairs or PCM replacement.

8. Can a DIY enthusiast fix OBDII code P1618 (Dodge) Sensor Reference Voltage 1 Erratic?

- Depending on the underlying cause, some DIY enthusiasts may be able to address the issue themselves by following diagnostic procedures and making the necessary repairs.

9. What happens if OBDII code P1618 (Dodge) Sensor Reference Voltage 1 Erratic is ignored?

- Ignoring this code can lead to ongoing engine performance issues, potential damage to other components, and may eventually result in a breakdown or safety hazard while driving.

10. How long does it typically take to repair OBDII code P1618 (Dodge) Sensor Reference Voltage 1 Erratic?

- The repair time can vary based on the cause of the issue and the complexity of the repair. It may range from a quick sensor replacement to a more involved wiring repair, which could take several hours.