AutoCodes – KIA – P0766 KIA

P0766 KIA Code - High & Low Reverse Clutch Solenoid Valve

Quick Answer

High & Low Reverse Clutch solenoid valve is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP) switch, vehicle speed and Engine Control Module (ECM) (throttle opening). Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty High & Low Reverse Clutch Solenoid valve. 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
P0766 KIA indicates High & Low Reverse Clutch Solenoid Valve.
Common causes
Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty High & Low Reverse Clutch Solenoid valve.
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 3,983
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0766 KIA Description

High & Low Reverse Clutch solenoid valve is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP) switch, vehicle speed and Engine Control Module (ECM) (throttle opening). Gears will then be shifted to the optimum position.
OBDII Code P0766 KIA - High & Low Reverse Clutch Solenoid Valve - AutoCodes.com
P0766 KIA Code - High & Low Reverse Clutch Solenoid Valve

What are the Possible Causes of the DTC P0766 KIA?

  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty High & Low Reverse Clutch Solenoid valve
  • High & Low Reverse Clutch Solenoid valve harness or connectors
  • High & Low Reverse Clutch Solenoid valve circuit is open or shorted

How to Fix the DTC P0766 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 P0766 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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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 P0766 KIA Code

What does the OBDII code P0766 mean for a Kia?

P0766 indicates an issue with the high and low reverse clutch solenoid valve in the transmission, which affects gear shifting and overall transmission performance.

What are the common symptoms of code P0766 in a Kia?

Symptoms may include erratic or delayed shifting, slipping gears, transmission overheating, reduced fuel efficiency, or the vehicle going into limp mode.

What causes the P0766 code to appear in a Kia?

Common causes include a faulty high and low reverse clutch solenoid valve, wiring or connector issues, low transmission fluid levels, or internal transmission damage.

Can low transmission fluid cause code P0766 in a Kia?

Yes, insufficient or contaminated transmission fluid can affect solenoid performance and cause this code to appear.

How do you diagnose code P0766 in a Kia?

Diagnosis typically involves scanning for codes, inspecting the solenoid valve and wiring, checking fluid levels, and testing the solenoid with specialized equipment.

What repairs are needed to fix code P0766 in a Kia?

Repairs may include replacing the solenoid valve, repairing damaged wiring or connectors, flushing and refilling transmission fluid, or addressing internal transmission issues.

Can I drive my Kia with the P0766 code?

Driving with this code is not recommended, as it can lead to further transmission damage, poor performance, and safety risks.

How much does it cost to fix the P0766 code in a Kia?

Repair costs vary but typically range from $200 to $600 for solenoid replacement, depending on labor rates and parts availability.

Will resetting the check engine light fix code P0766 in a Kia?

Resetting the light will clear the code temporarily, but the underlying issue must be resolved to prevent it from returning.

Is code P0766 specific to Kia vehicles?

No, this code can appear in other vehicles as well, but the specific diagnosis and repair steps may vary by make and model.

Discuss the causes and fixes for P0766 KIA OBDII Code

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