U11C1 Code - Reductant Control Module Received Implausible Data From ECM/PCM
Quick Answer
The Diesel Exhaust Fluid (DEF) Dosing Control Unit is used to control the operation and monitoring of the Diesel Exhaust Fluid system. Common causes include Faulty Diesel Exhaust Fluid (DEF) Dosing Control Unit, Diesel Exhaust Fluid Dosing Control Unit harness is open or shorted, Diesel Exhaust Fluid Dosing Control Unit 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
- U11C1 indicates Reductant Control Module Received Implausible Data From ECM/PCM.
- Common causes
- Common causes include Faulty Diesel Exhaust Fluid (DEF) Dosing Control Unit, Diesel Exhaust Fluid Dosing Control Unit harness is open or shorted, Diesel Exhaust Fluid Dosing Control Unit 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 U11C1 Description
What are the Possible Causes of the DTC U11C1?
- Faulty Diesel Exhaust Fluid (DEF) Dosing Control Unit
- Diesel Exhaust Fluid Dosing Control Unit harness is open or shorted
- Diesel Exhaust Fluid Dosing Control Unit circuit poor electrical connection
- Faulty Powertrain Control Module (PCM)
How to Fix the DTC U11C1?
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 U11C1 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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Information for Specific Makes
- U11C1 Chrysler — Reductant Control Module Received Implausible Data From ECM/PCM
- U11C1 Dodge — Reductant Control Module Received Implausible Data From ECM/PCM
- U11C1 Jeep — Reductant Control Module Received Implausible Data From ECM/PCM
- U11C1 RAM — Reductant Control Module Received Implausible Data From ECM/PCM
Frequently Asked Questions about U11C1 Code
1. What are the common symptoms of OBDII code U11C1?
Symptoms may include reduced engine performance, poor fuel economy, and the illumination of the check engine light.
2. What causes the OBDII code U11C1 to trigger?
This code is typically triggered when the Reductant Control Module receives implausible data from the Engine Control Module/Powertrain Control Module (ECM/PCM).
3. How serious is the OBDII code U11C1?
While this code may not cause immediate drivability issues, it should be addressed promptly to prevent potential damage to the emissions system and ensure optimal vehicle performance.
4. What are some possible repair tips for OBDII code U11C1?
Repair tips may include checking and cleaning electrical connections between the Reductant Control Module and the ECM/PCM, updating software as recommended by the manufacturer, and ensuring proper fluid levels in the emissions system.
5. Can I continue driving with the OBDII code U11C1 present?
It is generally not recommended to ignore this code and continue driving, as it could lead to increased emissions, reduced fuel efficiency, and potential long-term damage to the vehicle's emissions control system.
6. How can I diagnose the OBDII code U11C1?
Diagnosis typically involves using a professional OBDII scanner to read the code, followed by further inspection of the Reductant Control Module, ECM/PCM, and related components to identify the root cause of the issue.
7. Is it possible to reset the OBDII code U11C1 without fixing the underlying problem?
While clearing the code may temporarily turn off the check engine light, the underlying issue will persist and may cause the code to reappear. It is best to address the root cause of the problem.
8. How much does it cost to repair OBDII code U11C1?
The cost of repair can vary depending on the specific cause of the issue, labor rates in your area, and the need for replacement parts. It is recommended to consult with a professional mechanic for an accurate estimate.
9. Can I fix the OBDII code U11C1 myself?
Depending on your level of automotive knowledge and experience, you may be able to address this code yourself by following service manuals, technical guides, and using the appropriate diagnostic tools. However, seeking professional help is advisable for accurate diagnosis and repair.
10. Will OBDII code U11C1 cause my vehicle to fail emissions testing?
If left unresolved, this code could affect the emissions output of your vehicle, potentially causing it to fail emissions testing. It is important to address the issue promptly to ensure compliance with emissions regulations and maintain a properly functioning vehicle.
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