AutoCodes – Infiniti – C1171 Infiniti

C1171 Infiniti Code - Engine Check Signal

Quick Answer

The Engine Control Module (ECM) monitors the communication between Vehicle Dynamic Control (VDC) Control Unit or Control Area Network (CAN)-Local Area Network (LAN) Converter (CLC). Common causes include Faulty Vehicle Dynamic Control (VDC) Control Unit, Vehicle Dynamic Control (VDC) Control Unit harness is open or shorted, Vehicle Dynamic Control (VDC) 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: C1171 Infiniti indicates Engine Check Signal.
Common causes: Common causes include Faulty Vehicle Dynamic Control (VDC) Control Unit, Vehicle Dynamic Control (VDC) Control Unit harness is open or shorted, Vehicle Dynamic Control (VDC) 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.

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Code Popularity 3,662

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 Aug 20, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1171 Infiniti Description

OBDII Code C1171 Infiniti - Engine Check Signal - AutoCodes.com — C1171 Infiniti Code - Engine Check Signal

What does this mean?

What are the Possible Causes of the DTC C1171 Infiniti?

Faulty Vehicle Dynamic Control (VDC) Control Unit
Vehicle Dynamic Control (VDC) Control Unit harness is open or shorted
Vehicle Dynamic Control (VDC) Control Unit circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC C1171 Infiniti?

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 C1171 Infiniti 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 C1171 Infiniti code?

Need more information on how to fix the C1171 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1171 Infiniti 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 C1171 Infiniti Code

1. What are the common symptoms of OBDII code C1171 Infiniti (Engine Check Signal)?

- Common symptoms include the engine check light illuminating on the dashboard and potential issues with the engine's performance.

2. What are some possible causes of OBDII code C1171 in an Infiniti vehicle?

- Possible causes of code C1171 include a faulty engine check signal circuit, damaged wiring, or a defective engine control module (ECM).

3. How can I diagnose the OBDII code C1171 in my Infiniti?

- To diagnose code C1171, you can use an OBDII scanner to retrieve the specific fault code and then perform a visual inspection of the engine check signal circuit and related components.

4. What are some repair tips for resolving OBDII code C1171 in an Infiniti?

- Repair tips for code C1171 may include checking and repairing any damaged wiring, replacing a faulty engine check signal circuit, or reprogramming the ECM if necessary.

5. Can I drive my Infiniti with OBDII code C1171 present?

- It is generally not recommended to drive your Infiniti with an active OBDII code like C1171, as it can indicate potential issues with the engine that may affect its performance and safety.

6. How serious is OBDII code C1171 in an Infiniti?

- Code C1171 should be addressed promptly as it can impact the engine's performance and potentially lead to more severe issues if left unresolved.

7. Is it safe to clear the OBDII code C1171 in my Infiniti without repairing the issue?

- While clearing the code may temporarily turn off the check engine light, it is important to diagnose and repair the underlying issue causing code C1171 to prevent further problems.

8. Can a DIY enthusiast fix OBDII code C1171 in an Infiniti?

- Depending on your skill level and access to tools, you may be able to address code C1171 yourself by following repair guides and procedures specific to your vehicle.

9. How much does it typically cost to repair OBDII code C1171 in an Infiniti?

- The cost of repairing code C1171 can vary depending on the root cause of the issue, the parts needed for repair, and whether you choose to fix it yourself or seek professional help.

10. Will OBDII code C1171 cause my Infiniti to fail an emissions test?

- Yes, OBDII code C1171 can cause your Infiniti to fail an emissions test as it indicates a problem with the engine that may affect emissions control systems.