AutoCodes – Jeep – C0078 Jeep

C0078 Jeep Code - Tire Diameter

Quick Answer

The Anti-Lock Brake System (ABS) Module monitors the Tire Diameter. Common causes include Tire pressure too low or too high, Wrong tire diameter. 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: C0078 Jeep indicates Tire Diameter.
Common causes: Common causes include Tire pressure too low or too high, Wrong tire diameter.
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 6,591

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 C0078 Jeep Description

The Anti-Lock Brake System (ABS) Module monitors the Tire Diameter. The ABS Module sets the OBDII code when the Tire Diameter is not to factory specifications.

OBDII Code C0078 Jeep - Tire Diameter - AutoCodes.com — C0078 Jeep Code - Tire Diameter

What does this mean?

What are the Possible Causes of the DTC C0078 Jeep?

Tire pressure too low or too high
Wrong tire diameter

How to Fix the DTC C0078 Jeep?

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 C0078 Jeep 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 C0078 Jeep code?

Need more information on how to fix the C0078 Jeep code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0078 Jeep 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 C0078 Jeep Code

1. What does OBDII code C0078 for Jeep mean?

- OBDII code C0078 for Jeep indicates an issue with the tire diameter signal.

2. What are the common symptoms of OBDII code C0078 in a Jeep?

- Common symptoms include inaccurate speedometer readings, ABS system malfunctions, and traction control issues.

3. What are the possible causes of OBDII code C0078 in a Jeep?

- Possible causes include faulty wheel speed sensors, damaged wiring harnesses, incorrect tire size, or issues with the ABS module.

4. How can I diagnose the OBDII code C0078 in my Jeep?

- Diagnosing OBDII code C0078 typically involves checking the wheel speed sensor readings, inspecting the wiring for damage, and ensuring the correct tire size is installed.

5. Can driving with OBDII code C0078 cause further damage to my Jeep?

- Continuing to drive with OBDII code C0078 can potentially cause issues with the ABS system and traction control, leading to unsafe driving conditions.

6. How can I repair OBDII code C0078 in my Jeep?

- Repairing OBDII code C0078 may involve replacing faulty wheel speed sensors, repairing damaged wiring, ensuring the correct tire size is installed, or reprogramming the ABS module.

7. Is it safe to ignore OBDII code C0078 in my Jeep?

- Ignoring OBDII code C0078 can lead to safety risks due to potential ABS and traction control malfunctions. It is recommended to address the issue promptly.

8. Can I reset OBDII code C0078 in my Jeep by disconnecting the battery?

- While disconnecting the battery may clear the code temporarily, it is important to address the underlying issue causing OBDII code C0078 to prevent it from recurring.

9. How much does it typically cost to fix OBDII code C0078 in a Jeep?

- The cost of fixing OBDII code C0078 can vary depending on the specific cause of the issue, but it may range from a few hundred to a thousand dollars for parts and labor.

10. Can a DIY enthusiast repair OBDII code C0078 in a Jeep?

- DIY enthusiasts with automotive repair experience may be able to address OBDII code C0078 by following diagnostic procedures, replacing sensors or wiring, and ensuring proper tire size, but professional assistance may be recommended for complex issues.