OBD-II Generic Error Code P0746: How to Fix It

Medium 1-3 hours Medium Severity Verified June 2026
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Error Code
P0746
Brand
OBD-II Generic
Product Type
automotive
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
1-3 hours
Error code P0746 means the transmission control module (TCM) has detected that the pressure control solenoid A is stuck off or not performing correctly. This can cause harsh shifting, slipping, or delayed engagement. This guide helps you diagnose and fix the issue.
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Tools You'll Need

How to Fix Error Code P0746

  1. Check Transmission Fluid Level and Condition

    Let engine cool if hot. Use proper jack stands if vehicle is lifted.

  2. Inspect Wiring and Connectors

    Disconnect battery negative terminal before handling electrical connectors.

  3. Test Solenoid Resistance

  4. Replace Pressure Control Solenoid A

    Transmission fluid is hot; allow to cool. Dispose of old fluid properly.

  5. Clear Codes and Test Drive

Parts You May Need

Pressure control solenoid A
Check Price on Amazon
Transmission fluid and filter
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Transmission pan gasket
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Pressure control solenoid A
Check Price on Amazon
Transmission fluid and filter
Check Price on Amazon
Transmission pan gasket
Check Price on Amazon
Pressure control solenoid A
Check Price on Amazon
Transmission fluid and filter
Check Price on Amazon
Transmission pan gasket
Check Price on Amazon
Pressure control solenoid A
Check Price on Amazon
Transmission fluid and filter
Check Price on Amazon
Transmission pan gasket
Check Price on Amazon
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When to Call a Professional

If you lack mechanical experience, if transmission fluid is burnt, or if replacing the solenoid doesn't fix the issue, a professional transmission shop should inspect for internal damage.

Frequently Asked Questions

Can I drive with code P0746?
It's not recommended. Driving may cause further transmission damage. Have it diagnosed and repaired promptly.
Is P0746 the same as P0747?
No. P0746 is for solenoid A performance/stuck off, while P0747 is for solenoid A stuck on. They have different symptoms and fixes.
What causes pressure control solenoid to fail?
Common causes include low or dirty transmission fluid, electrical issues, or normal wear over time.
How much does it cost to fix P0746?
DIY solenoid replacement parts cost $50-$150. Professional repair can range from $200-$800 depending on labor and parts.
Can a bad solenoid cause transmission to slip?
Yes. A stuck-off solenoid can reduce line pressure, leading to slipping, delayed shifts, or no engagement.

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