AutoCodesGeneric – U210C

U210C Code - Lost Communication Between Fuel Pump Control Module 'B' and Restraints Control Module

Quick Answer

The Fuel Pump Control Module 2 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
U210C indicates Lost Communication Between Fuel Pump Control Module 'B' 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.
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Code Popularity 3,533
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 U210C Description

The Fuel Pump Control Module 2 monitors the duty cycle and frequency of the signal it receives from the Restraints Control Module (RCM). The fuel pump control module 2 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 2 sends a 40% duty cycle signal on the Fuel Pump Monitor 2 (FPM2) circuit to report the concern to the Powertrain Control Module (PCM). The test fails when the fuel pump control module 2 is still reporting that it is receiving an invalid duty cycle or frequency from the RCM after a calibrated amount of time.
OBDII Code U210C - Lost Communication Between Fuel Pump Control Module 'B' and Restraints Control Module - AutoCodes.com
U210C Code - Lost Communication Between Fuel Pump Control Module 'B' and Restraints Control Module

What are the Possible Causes of the DTC U210C?

  • 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) 2
  • Faulty Fuel Pump Control Module

How to Fix the DTC U210C?

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 U210C 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 U210C code?

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Information for Specific Makes

  • U210C Ford — Lost Communication Between Fuel Pump Control Module 'B' and Restraints Control Module
  • U210C Lincoln — Lost Communication Between Fuel Pump Control Module 'B' and Restraints Control Module
  • U210C Mercury — Lost Communication Between Fuel Pump Control Module 'B' 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 U210C Code

What does the OBD-II code U210C mean?

Code U210C indicates a loss of communication between the Fuel Pump Control Module 'B' and the Restraints Control Module, signaling a potential issue in the vehicle’s communication network.

What are common symptoms of code U210C?

Symptoms may include difficulty starting the vehicle, intermittent stalling, warning lights on the dashboard, or degraded fuel system performance.

What causes code U210C to appear?

Possible causes include wiring issues, faulty connectors, a malfunctioning Fuel Pump Control Module, a bad Restraints Control Module, or network communication faults.

Can code U210C cause the vehicle to not start?

Yes, a loss of communication can prevent the Fuel Pump Control Module from operating properly, leading to a no-start condition.

How can I diagnose code U210C?

Start by inspecting the wiring and connectors for damage or corrosion, then use a scan tool to check for other related codes and test module functionality.

Is code U210C a serious issue?

Yes, it can potentially affect critical systems like fuel delivery and safety mechanisms, so it should be addressed promptly.

Can a software update fix code U210C?

In some cases, a software update for the affected modules may resolve communication issues, but hardware faults should be ruled out first.

How do I repair code U210C?

Repairs may involve fixing damaged wiring, replacing faulty connectors, or replacing the Fuel Pump Control Module or Restraints Control Module if they are defective.

Will clearing the code solve the problem?

Clearing the code may temporarily remove the warning, but the underlying issue must be resolved to prevent it from reappearing.

Should I take my car to a professional for code U210C?

If you are unable to identify and fix the issue, it’s recommended to seek professional diagnosis and repair due to the complexity of communication systems in modern vehicles.

Discuss the causes and fixes for U210C OBDII Code

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