OBD-II Generic Error Code P0764: How to Fix Shift Solenoid C Intermittent

Medium 1-3 hours Medium Severity Verified June 2026
Summarize with ChatGPTSummarize with ClaudeSummarize with Perplexity Add as Preferred Source on Google
Error Code
P0764
Brand
OBD-II Generic
Product Type
automotive
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
1-3 hours
Error code P0764 means your car's transmission control module detected an intermittent signal from shift solenoid C. This solenoid controls hydraulic pressure for gear shifts, and an intermittent fault can cause erratic shifting or a temporary loss of a gear. Here's how to fix it.
Ad

Tools You'll Need

How to Fix Error Code P0764

  1. Check Transmission Fluid Level and Condition

    Engine and transmission should be warm but not hot to avoid burns.

  2. Scan for Additional Codes

  3. Inspect Wiring and Connectors

    Disconnect the battery negative terminal before working on electrical connectors.

  4. Test Shift Solenoid C Resistance

  5. Replace Shift Solenoid C (if faulty)

    Use jack stands and safety glasses. Dispose of old fluid properly.

  6. Clear Codes and Test Drive

Parts You May Need

Shift solenoid C
Check Price on Amazon
Transmission pan gasket
Check Price on Amazon
Transmission fluid
Check Price on Amazon
Shift solenoid C
Check Price on Amazon
Transmission pan gasket
Check Price on Amazon
Transmission fluid
Check Price on Amazon
Shift solenoid C
Check Price on Amazon
Transmission pan gasket
Check Price on Amazon
Transmission fluid
Check Price on Amazon
Shift solenoid C
Check Price on Amazon
Transmission pan gasket
Check Price on Amazon
Transmission fluid
Check Price on Amazon
Ad

When to Call a Professional

If you're not comfortable working with transmissions, or if the code returns after replacing the solenoid, a professional mechanic should check for internal transmission damage or TCM issues.

Frequently Asked Questions

Can I drive with P0764?
You can drive short distances, but intermittent shifting can cause further damage. Have it diagnosed promptly.
How much does it cost to fix P0764?
DIY cost is around $50-$150 for a solenoid. Professional repair can range from $200-$800 depending on labor.
What causes shift solenoid C to fail?
Common causes include low or dirty transmission fluid, electrical issues, or normal wear over time.
Will a transmission flush fix P0764?
A flush may help if the solenoid is stuck due to debris, but it won't fix a faulty solenoid or wiring issue.
Is P0764 a serious error?
It's moderate. Prompt repair prevents transmission damage and ensures safe driving.

Related Error Codes