U1403 RAM Code - Implausible Fuel Level Signal Received
Quick Answer
The Fuel Level Sensor signal is a direct input to the Body Control Module (BCM). Common causes include Faulty Powertrain Control Module (PCM), Powertrain Control Module harness is open or shorted, Powertrain Control Module 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
- U1403 RAM indicates Implausible Fuel Level Signal Received.
- Common causes
- Common causes include Faulty Powertrain Control Module (PCM), Powertrain Control Module harness is open or shorted, Powertrain Control Module 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.
Code U1403 RAM Description
What are the Possible Causes of the DTC U1403 RAM?
- Faulty Powertrain Control Module (PCM)
- Powertrain Control Module harness is open or shorted
- Powertrain Control Module circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC U1403 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 U1403 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.
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Frequently Asked Questions about U1403 RAM Code
1. What are the common symptoms of OBDII code U1403 RAM - Implausible Fuel Level Signal Received?
The common symptoms include inaccurate fuel level readings on the dashboard, fluctuating fuel gauge, or a fuel gauge that remains at empty or full regardless of actual fuel level.
2. What are the potential causes of OBDII code U1403 RAM - Implausible Fuel Level Signal Received?
The code U1403 can be triggered by issues such as a faulty fuel level sensor, wiring problems in the fuel level sensor circuit, or a malfunctioning instrument cluster.
3. How can I diagnose the OBDII code U1403 RAM - Implausible Fuel Level Signal Received?
Diagnosing this code typically involves checking the fuel level sensor for proper operation, inspecting the wiring for any damage or corrosion, and using a scan tool to monitor the fuel level sensor data.
4. Is it safe to continue driving with the OBDII code U1403 RAM - Implausible Fuel Level Signal Received?
While driving with this code may not immediately affect the vehicle's performance, it is not recommended as inaccurate fuel level readings can lead to running out of fuel unexpectedly.
5. Can I reset the OBDII code U1403 RAM - Implausible Fuel Level Signal Received without fixing the underlying issue?
Resetting the code without addressing the root cause will only temporarily clear the error code. The issue will likely resurface until the underlying problem is resolved.
6. How can I repair OBDII code U1403 RAM - Implausible Fuel Level Signal Received?
Depending on the root cause, repairing this code may involve replacing the fuel level sensor, repairing or replacing damaged wiring, or addressing any instrument cluster issues.
7. Are there any DIY tips for fixing OBDII code U1403 RAM - Implausible Fuel Level Signal Received?
DIY enthusiasts with automotive repair experience may attempt to inspect the fuel level sensor and wiring themselves. However, complex repairs or electrical work may require professional assistance.
8. Can extreme weather conditions trigger OBDII code U1403 RAM - Implausible Fuel Level Signal Received?
Extreme temperatures can potentially affect the performance of the fuel level sensor or wiring, leading to erratic readings and triggering the U1403 code.
9. How long does it typically take to repair OBDII code U1403 RAM - Implausible Fuel Level Signal Received?
The repair time can vary depending on the exact cause of the issue and the availability of parts. Simple fixes like replacing a sensor may take a few hours, while more complex wiring repairs could take longer.
10. Is it necessary to visit a dealership for OBDII code U1403 RAM - Implausible Fuel Level Signal Received repairs?
While dealerships have expertise in diagnosing and repairing such issues, independent mechanics or DIY enthusiasts with the right tools and knowledge can also effectively address the U1403 code.
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