Engine-Codes - Hyundai - P0770 Hyundai

P0770 Hyundai Code - Reduction Solenoid Valve System Fault

- Code Popularity: 8,565 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code P0770 Hyundai?

  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty Reduction solenoid valve
  • Reduction solenoid valve harness is open or shorted
  • Reduction solenoid valve circuit poor electrical connection

|How to Fix the P0770 Hyundai Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|What is the Cost to Diagnose the Code P0770 Hyundai?

Labor: 1.0

The cost to diagnose the P0770 Hyundai code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

Does your Hyundai have Safety Recalls? → Check here

|When is the P0770 Hyundai Code Detected?

The P0770 code is detected when the ECM detects an improper voltage drop when it tries to operate the solenoid valve.

|What are Code P0770 Hyundai Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Transmission will not shift gears.

|What Does the P0770 Hyundai Code Mean?

Reduction 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.

P0770 Hyundai Code - Reduction Solenoid Valve System Fault

|Need more Information on the P0770 Hyundai Code?

Need more information on how to fix the P0770 Hyundai code? Get Access to Factory Service Manuals

|Need Help with the P0770 Hyundai Code?

Get the P0770 Hyundai code diagnosed by a professional: Find a repair shop in your area