AutoCodes – Generic – C1493

C1493 Code - Rear Driveline Module Internal Performance

Quick Answer

The Drive Train Control Module (DTCM) monitors the Rear Driveline Module (RDM). Common causes include Faulty Rear Driveline Module (RDM), Rear Driveline Module (RDM) harness is open or shorted, Rear Driveline Module (RDM) 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
C1493 indicates Rear Driveline Module Internal Performance.
Common causes
Common causes include Faulty Rear Driveline Module (RDM), Rear Driveline Module (RDM) harness is open or shorted, Rear Driveline Module (RDM) 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 4,551
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Oct 14, 2020
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Code C1493 Description

The Drive Train Control Module (DTCM) monitors the Rear Driveline Module (RDM). The DTCM sets the OBDII code when it detects an internal failure in the Rear Driveline Module (RDM).
OBDII Code C1493 - Rear Driveline Module Internal Performance - AutoCodes.com
C1493 Code - Rear Driveline Module Internal Performance

What are the Possible Causes of the DTC C1493?

  • Faulty Rear Driveline Module (RDM)
  • Rear Driveline Module (RDM) harness is open or shorted
  • Rear Driveline Module (RDM) circuit poor electrical connection

How to Fix the DTC C1493?

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 C1493 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 C1493 code?

Need more information on how to fix the C1493 code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Makes

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 C1493 Code

1. What are the common symptoms of OBDII code C1493 (Rear Driveline Module Internal Performance)?

- Common symptoms include the illumination of the Check Engine Light, driveline issues, and potential difficulty shifting gears.

2. What are the possible causes of OBDII code C1493?

- Possible causes of this code may include a faulty rear driveline module, poor electrical connections, or internal module malfunctions.

3. How can I diagnose OBDII code C1493?

- Diagnosing this code typically involves using a professional OBDII scanner to read the code, checking for any additional related codes, and performing a visual inspection of the driveline module.

4. What repairs are typically needed for OBDII code C1493?

- Repairs may involve replacing the rear driveline module, repairing any damaged wiring or connections, or reprogramming the module to resolve the internal performance issue.

5. Can I drive my vehicle with OBDII code C1493?

- It is not recommended to drive your vehicle with this code present, as it may lead to drivability issues and potentially cause further damage to the driveline system.

6. How urgent is it to address OBDII code C1493?

- It is important to address this code promptly to prevent any driveline malfunctions or further damage to the driveline module.

7. How much does it typically cost to repair OBDII code C1493?

- Repair costs for this code can vary depending on the specific issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

8. Can I reset OBDII code C1493 and see if it comes back?

- While you can reset the code to see if it reappears, it is recommended to diagnose and address the underlying issue causing the code rather than just clearing it and ignoring the problem.

9. Is OBDII code C1493 specific to certain vehicle makes and models?

- This code may be specific to certain vehicle makes and models, particularly those equipped with rear driveline modules, so it's essential to consult your vehicle's service manual for accurate information.

10. How can I prevent OBDII code C1493 from recurring in the future?

- Regular maintenance, including checking and maintaining the driveline module and related components, can help prevent this code from recurring in the future.

Discuss the causes and fixes for C1493 OBDII Code

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