AutoCodes – KIA – P0078 KIA

P0078 KIA Code - Exhaust Valve Control Solenoid Circuit Bank 1

Quick Answer

Exhaust valve timing control magnet retarder controls the shut/open timing of the exhaust valve by ON/OFF pulse duty signals sent from the Engine Control Module (ECM). Common causes include Faulty Exhaust Valve Control Solenoid Bank 1, Exhaust Valve Control Solenoid Circuit Bank 1 harness is open or shorted, Exhaust Valve Control Solenoid Circuit Bank 1 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: P0078 KIA indicates Exhaust Valve Control Solenoid Circuit Bank 1.
Common causes: Common causes include Faulty Exhaust Valve Control Solenoid Bank 1, Exhaust Valve Control Solenoid Circuit Bank 1 harness is open or shorted, Exhaust Valve Control Solenoid Circuit Bank 1 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 12,803

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 Oct 25, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0078 KIA Description

Exhaust valve timing control magnet retarder controls the shut/open timing of the exhaust valve by ON/OFF pulse duty signals sent from the Engine Control Module (ECM). The longer pulse width retards valve angle. The shorter pulse width advances valve angle.

OBDII Code P0078 KIA - Exhaust Valve Control Solenoid Circuit Bank 1 - AutoCodes.com — P0078 KIA Code - Exhaust Valve Control Solenoid Circuit Bank 1

What does this mean?

What are the Possible Causes of the DTC P0078 KIA?

Faulty Exhaust Valve Control Solenoid Bank 1
Exhaust Valve Control Solenoid Circuit Bank 1 harness is open or shorted
Exhaust Valve Control Solenoid Circuit Bank 1 circuit poor electrical connection

How to Fix the DTC P0078 KIA?

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 P0078 KIA 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.

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Get the P0078 KIA 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 P0078 KIA Code

1. What are the common symptoms of OBDII code P0078 in a KIA vehicle?

The common symptoms of OBDII code P0078 in a KIA vehicle include rough idling, decreased engine performance, and potential stalling.

2. What does the OBDII code P0078 in a KIA indicate?

OBDII code P0078 in a KIA indicates a malfunction in the Exhaust Valve Control Solenoid Circuit Bank 1.

3. What are the possible causes of OBDII code P0078 in a KIA?

Possible causes of OBDII code P0078 in a KIA include a faulty exhaust valve control solenoid, wiring issues, or a malfunctioning PCM (Powertrain Control Module).

4. How can I diagnose the OBDII code P0078 in my KIA?

Diagnosing OBDII code P0078 in a KIA involves using an OBDII scanner to retrieve the code, inspecting the exhaust valve control solenoid and its wiring, and performing a continuity test.

5. Can I continue driving my KIA with OBDII code P0078?

It is not recommended to continue driving your KIA with OBDII code P0078, as it can lead to further engine damage and potential safety hazards.

6. How can I repair OBDII code P0078 in my KIA?

To repair OBDII code P0078 in your KIA, you may need to replace the faulty exhaust valve control solenoid, repair any damaged wiring, or reset the PCM after fixing the issue.

7. Are there any DIY tips for fixing OBDII code P0078 in a KIA?

While some may attempt to replace the exhaust valve control solenoid themselves, it is recommended to consult a professional mechanic for accurate diagnosis and repair of OBDII code P0078 in a KIA.

8. How much does it cost to repair OBDII code P0078 in a KIA?

The cost to repair OBDII code P0078 in a KIA can vary depending on the extent of the issue, parts needed, and labor costs. It is advisable to get quotes from different mechanics for an accurate estimate.

9. Can OBDII code P0078 in a KIA cause other problems if left unaddressed?

If left unaddressed, OBDII code P0078 in a KIA can lead to reduced fuel efficiency, engine misfires, and potential damage to other engine components over time.

10. How long does it take to repair OBDII code P0078 in a KIA?

The time taken to repair OBDII code P0078 in a KIA can vary based on the exact cause of the issue, availability of parts, and the mechanic's workload. It is best to consult with a professional for a more accurate timeline.