P1681 RAM Code - No Fuel Level Bus Message
Quick Answer
The no fuel level bus message is monitored with the ignition on. Common causes include Low fuel level, Faulty Instrument Cluster, Instrument Cluster harness is open or shorted. 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 RAM indicates No Fuel Level Bus Message.
- Common causes
- Common causes include Low fuel level, Faulty Instrument Cluster, Instrument Cluster harness is open or shorted.
- 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.
Code P1681 RAM Description
What are the Possible Causes of the DTC P1681 RAM?
- Low fuel level
- Faulty Instrument Cluster
- Instrument Cluster harness is open or shorted
- Instrument Cluster circuit poor electrical connection
- Faulty Powertrain Control Module (PCM)
How to Fix the DTC P1681 RAM?
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 P1681 RAM 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 P1681 RAM code?
Need more information on how to fix the P1681 RAM code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1681 RAM code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1681 RAM Code
1. What does the OBDII code P1681 mean in a RAM vehicle?
P1681 indicates that the Powertrain Control Module (PCM) is not receiving a fuel level message from the fuel level sensor via the data bus.
2. What are the common symptoms of the P1681 code?
Symptoms may include an inaccurate or non-functional fuel gauge, the check engine light turning on, and potential drivability issues if the PCM relies on fuel level data for certain calculations.
3. What causes the P1681 code to appear in a RAM vehicle?
Common causes include a faulty fuel level sensor, damaged wiring or connectors in the fuel level sensor circuit, or communication issues within the vehicle's data bus network.
4. Can I still drive my RAM with the P1681 code active?
Yes, but driving with this code may cause inconvenience due to an inaccurate fuel gauge. Ignoring the issue long-term could lead to running out of fuel unexpectedly.
5. How do I diagnose the P1681 code?
Start by checking the fuel level sensor and its wiring for damage or loose connections. Use a scan tool to verify if the PCM is receiving fuel level data from the sensor.
6. How can I fix the P1681 code in my RAM vehicle?
Repairs may include replacing a faulty fuel level sensor, repairing damaged wiring or connectors, or addressing data bus communication issues.
7. Can a faulty PCM cause the P1681 code?
While rare, a faulty PCM could cause this code if it fails to process or read the fuel level message from the sensor properly.
8. How much does it cost to fix the P1681 code?
The repair cost depends on the root cause but typically ranges from $100 to $400, with fuel level sensor replacement being a common repair.
9. Will clearing the P1681 code with a scan tool fix the problem?
Clearing the code may turn off the check engine light temporarily, but the issue will return if the underlying cause is not addressed.
10. Can a loose fuel tank connection trigger the P1681 code?
Yes, loose or corroded connections at the fuel tank can disrupt the signal from the fuel level sensor, potentially causing this code.
Discuss the causes and fixes for P1681 RAM OBDII Code
Code P1681 RAM comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
