OBD-II Generic Error Code P0782: How to Fix It

Medium 1-2 hours Medium Severity Verified June 2026
Error Code
P0782
Brand
OBD-II Generic
Product Type
automotive
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
1-2 hours
Error code P0782 indicates a 2-3 shift malfunction in your vehicle's automatic transmission. This means the transmission control module has detected a problem during the shift from second to third gear. It can cause harsh shifting, slipping, or failure to shift.
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Tools You'll Need

How to Fix Error Code P0782

  1. Check Transmission Fluid Level and Condition

    Wear gloves and safety glasses. Hot fluid can cause burns.
  2. Inspect for Leaks and Damage

  3. Scan for Additional Codes

  4. Test Shift Solenoids

    Disconnect the battery before testing to avoid electrical shock.
  5. Inspect Wiring and Connectors

  6. Check Transmission Control Module (TCM)

    Electrostatic discharge can damage the module. Use proper grounding.

Parts You May Need

2-3 Shift Solenoid
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Transmission Filter and Fluid
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Transmission Control Module (TCM)
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2-3 Shift Solenoid
Check Price on Amazon
Transmission Filter and Fluid
Check Price on Amazon
Transmission Control Module (TCM)
Check Price on Amazon
2-3 Shift Solenoid
Check Price on Amazon
Transmission Filter and Fluid
Check Price on Amazon
Transmission Control Module (TCM)
Check Price on Amazon
2-3 Shift Solenoid
Check Price on Amazon
Transmission Filter and Fluid
Check Price on Amazon
Transmission Control Module (TCM)
Check Price on Amazon
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When to Call a Professional

If you are not comfortable checking transmission fluid, testing solenoids, or if the problem persists after basic checks, consult a professional mechanic. Internal transmission damage requires specialized tools and expertise.

Frequently Asked Questions

Can I drive with error code P0782?
It is not recommended. Driving with a 2-3 shift malfunction can cause further damage to the transmission and lead to unsafe driving conditions.
What causes error code P0782?
Common causes include low or dirty transmission fluid, a faulty shift solenoid, wiring issues, or a malfunctioning transmission control module.
How much does it cost to fix P0782?
Cost varies widely. DIY repair for low fluid or a solenoid can be under $100. Professional diagnosis and repair can range from $200 to $1500 or more if a transmission rebuild is needed.
Will clearing the code fix P0782?
Clearing the code may temporarily turn off the check engine light, but the underlying problem will likely return. It is essential to diagnose and repair the issue.
Is P0782 a serious problem?
Yes, it is serious as it directly affects transmission operation. Ignoring it can lead to transmission failure and costly repairs.