Engine-CodesChrysler – P1681 Chrysler

P1681 Chrysler Code - No Fuel Level Bus Message

Quick Answer

The P1681 Chrysler code indicates that there is a communication issue with the fuel level bus message in the vehicle's system. Common causes include Faulty fuel level sensor, Damaged wiring or connectors, Corrosion in the fuel level bus message circuit. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P1681 Chrysler indicates No Fuel Level Bus Message.
Common causes
Common causes include Faulty fuel level sensor, Damaged wiring or connectors, Corrosion in the fuel level bus message circuit.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P1681 Chrysler Description

The P1681 Chrysler code indicates that there is a communication issue with the fuel level bus message in the vehicle's system. This means that the fuel level data is not being properly transmitted or received by the appropriate modules within the vehicle. The fuel level bus message is responsible for sending information about the fuel level in the tank to various systems, such as the instrument cluster and the engine control module. When this communication is disrupted, it can lead to inaccurate fuel level readings on the dashboard, which can impact the driver's ability to monitor fuel consumption accurately.

OBDII Code P1681 Chrysler - No Fuel Level Bus Message
P1681 Chrysler Code - No Fuel Level Bus Message

Common Causes of P1681 Chrysler

  1. Faulty fuel level sensor
  2. Damaged wiring or connectors
  3. Corrosion in the fuel level bus message circuit
  4. Issues with the instrument cluster or engine control module
  5. Poor electrical connections

Symptoms of P1681 Chrysler

  1. Inaccurate fuel level readings on the dashboard
  2. Check Engine Light illuminated
  3. Engine performance issues
  4. Fuel gauge fluctuating erratically
  5. Fuel pump running continuously

How to Fix P1681 Chrysler

  1. Diagnose the issue using a scan tool to retrieve the fault code and verify the fuel level sensor readings.
  2. Inspect the wiring and connectors for any damage or corrosion. Repair or replace as necessary.
  3. Test the fuel level sensor's resistance to determine if it is faulty. Replace the sensor if needed.
  4. Clear the fault code from the system and reset the Check Engine Light.
  5. Test drive the vehicle to ensure the issue has been resolved and that accurate fuel level readings are displayed.

Cost to Fix P1681 Chrysler

The cost of repairing a P1681 Chrysler code can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay between $150 and $400 for parts and labor. Keep in mind that additional diagnostic time may be required to pinpoint the exact source of the problem, which could increase the overall cost. It is recommended to consult with a trusted auto repair shop for a more accurate estimate based on your vehicle's make and model.

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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.

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