AutoCodes – Generic – U210B

U210B Code - Lost Communication Between Fuel Pump Control Module 'A' and Restraints Control Module

Quick Answer

The Fuel Pump Control Module monitors the duty cycle and frequency of the signal it receives from the Restraints Control Module (RCM). Common causes include Event Notification Signal (ENS) harness is open or shorted, Event Notification Signal (ENS) circuit poor electrical connection, Radio frequency interference or electromagnetic interference. 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
U210B indicates Lost Communication Between Fuel Pump Control Module 'A' and Restraints Control Module.
Common causes
Common causes include Event Notification Signal (ENS) harness is open or shorted, Event Notification Signal (ENS) circuit poor electrical connection, Radio frequency interference or electromagnetic interference.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 3,256
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 15, 2020
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Code U210B Description

The Fuel Pump Control Module monitors the duty cycle and frequency of the signal it receives from the Restraints Control Module (RCM). The fuel pump control module determines if the signal on the Event Notification Signal (ENS) circuit from the RCM is a valid duty cycle and frequency. If the duty cycle or frequency is invalid, the fuel pump control module sends a 40% duty cycle signal on the Fuel Pump Monitor (FPM) circuit to report the concern to the Powertrain Control Module (PCM). The test fails when the fuel pump control module is still reporting that it is receiving an invalid duty cycle or frequency from the RCM after a calibrated amount of time.
OBDII Code U210B - Lost Communication Between Fuel Pump Control Module 'A' and Restraints Control Module - AutoCodes.com
U210B Code - Lost Communication Between Fuel Pump Control Module 'A' and Restraints Control Module

What are the Possible Causes of the DTC U210B?

  • Event Notification Signal (ENS) harness is open or shorted
  • Event Notification Signal (ENS) circuit poor electrical connection
  • Radio frequency interference or electromagnetic interference
  • Faulty Restraints Control Module (RCM)
  • Faulty Fuel Pump Control Module

How to Fix the DTC U210B?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U210B 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 U210B code?

Need more information on how to fix the U210B code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U210B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

  • U210B Ford β€” Lost Communication Between Fuel Pump Control Module 'A' and Restraints Control Module
  • U210B Lincoln β€” Lost Communication Between Fuel Pump Control Module 'A' and Restraints Control Module
  • U210B Mercury β€” Lost Communication Between Fuel Pump Control Module 'A' and Restraints Control Module
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 U210B Code

1. What are the common symptoms of OBDII code U210B (Lost Communication Between Fuel Pump Control Module 'A' and Restraints Control Module)?

- Common symptoms include issues with starting the vehicle, engine stalling, fuel pump not working properly, and warning lights illuminated on the dashboard.

2. What are the possible causes of OBDII code U210B?

- The code U210B can be caused by a faulty fuel pump control module, a malfunctioning restraints control module, damaged wiring or connectors, software glitches, or communication network issues.

3. How can I diagnose OBDII code U210B?

- Diagnosing code U210B typically involves using a professional OBDII scanner to retrieve the code, checking for any other related codes, inspecting the wiring and connectors, and performing a communication network test.

4. Can I still drive my vehicle with OBDII code U210B?

- It is not recommended to drive the vehicle with code U210B present, as it can lead to potential safety issues and further damage to the fuel pump control system.

5. How can I repair OBDII code U210B?

- Repairing code U210B often involves repairing or replacing the faulty fuel pump control module or restraints control module, fixing any damaged wiring or connectors, and clearing the code with a diagnostic tool.

6. Will resetting the code make it go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue causing code U210B is not addressed, the code is likely to reappear.

7. Can a DIY enthusiast fix OBDII code U210B?

- While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing code U210B often requires specialized tools and expertise, so it's recommended to consult a professional mechanic.

8. Is OBDII code U210B a common issue in certain vehicle models?

- The occurrence of code U210B can vary among different vehicle makes and models, but it is more commonly found in vehicles equipped with complex communication systems.

9. How much does it typically cost to repair OBDII code U210B at a professional auto repair shop?

- The cost of repairing code U210B can vary depending on the root cause of the issue, the labor rates of the repair shop, and the cost of any necessary parts. It's recommended to get a diagnostic and repair estimate from a trusted mechanic.

10. Can OBDII code U210B cause any long-term damage to the vehicle if left unresolved?

- Ignoring OBDII code U210B can potentially lead to long-term damage to the fuel pump control module, restraints control module, or other related components, affecting the overall performance and safety of the vehicle.

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