AutoCodes – Generic – U1214

U1214 Code - Invalid Or Missing Data For Primary Id

Quick Answer

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Common causes include Faulty Module that is not communicating, Module harness is open or shorted, 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: U1214 indicates Invalid Or Missing Data For Primary Id.
Common causes: Common causes include Faulty Module that is not communicating, Module harness is open or shorted, 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.

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Code Popularity 7,739

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1214 Description

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. When a module receives a message for a critical operating parameter, the module records the identification number of the module which sent the message for State of Health monitoring. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. When a module does not associate an identification number with at least one critical parameter within 5 seconds of beginning serial data communication, the Diagnostic Trouble Code (DTC) is set.

OBDII Code U1214 - Invalid Or Missing Data For Primary Id - AutoCodes.com — U1214 Code - Invalid Or Missing Data For Primary Id

What does this mean?

What are the Possible Causes of the DTC U1214?

Faulty Module that is not communicating
Module harness is open or shorted
Module circuit poor electrical connection

How to Fix the DTC U1214?

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 U1214 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 U1214 code?

Need more information on how to fix the U1214 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1214 code diagnosed by a professional: Find a repair shop in your area

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 U1214 Code

1. What does the OBDII code U1214 mean?

The code U1214 indicates that there is invalid or missing data for the primary ID in the vehicle's onboard diagnostics system.

2. What are some common symptoms of OBDII code U1214?

Common symptoms of U1214 may include issues with engine performance, rough idling, poor fuel economy, and the illumination of the check engine light.

3. What are the possible causes of OBDII code U1214?

Potential causes of U1214 include a faulty electronic control module (ECM), wiring issues, communication network problems, or a malfunctioning sensor.

4. How can I diagnose the OBDII code U1214?

Diagnosing U1214 typically involves using a diagnostic scanner to retrieve the trouble codes, checking the wiring and connections related to the primary ID, and performing a thorough inspection of the ECM and related components.

5. Is it safe to continue driving with the U1214 trouble code?

It is generally not recommended to drive with the U1214 code present, as it can lead to further damage to the vehicle's systems and components. It's best to address the issue promptly.

6. How can I repair OBDII code U1214?

Repairing U1214 may involve fixing any wiring or connection issues, replacing a faulty ECM, addressing communication network problems, or replacing a malfunctioning sensor as needed.

7. Can a DIY enthusiast fix the U1214 code?

While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing the U1214 code may require advanced technical knowledge and specialized tools. It is advisable to seek professional help if needed.

8. How much does it typically cost to repair the U1214 trouble code?

The cost of repairing the U1214 code can vary depending on the underlying cause, the extent of the repairs needed, and labor rates in your area. It's recommended to obtain quotes from reputable mechanics or repair shops.

9. Will resetting the trouble codes make the U1214 code disappear?

Resetting the trouble codes may temporarily clear the check engine light, but if the underlying issue causing the U1214 code is not addressed, the code is likely to reappear after driving the vehicle for a certain period.

10. Can a bad battery or alternator cause the U1214 trouble code?

A faulty battery or alternator may indirectly contribute to communication network issues that could trigger the U1214 code. It's important to ensure the electrical system is in good condition when diagnosing this code.