Mazda P0746 Error Code: How to Fix It

Error Code

P0746

Brand

Mazda

Product Type

automotive

Severity

High

DIY Difficulty

Hard

Estimated Fix Time

3-5 hours

Tools You'll Need

• OBD2 scanner
• Socket wrench set
• Drain pan (6+ quart capacity)
• Multimeter
• Transmission jack or stands
• Torque wrench
• Funnel
• Shop rags

How to Fix Error Code P0746

1. Scan for Additional Codes

   Never ignore transmission error codes as continued driving can cause permanent transmission damage.

2. Check Transmission Fluid Level and Condition

   Check fluid level on level ground with engine running and transmission in park.

3. Inspect Transmission Wiring Harness

   Disconnect the battery before working on electrical connections to prevent shorts.

4. Test Solenoid Resistance

5. Remove Transmission Pan and Filter

   Transmission fluid may be hot and can cause burns. Allow cooling time before draining.

6. Replace Pressure Control Solenoid

   Use only genuine Mazda solenoids or OEM equivalent parts to ensure proper function.

7. Install New Filter and Pan

   Do not over-tighten pan bolts as this can warp the pan and cause leaks.

8. Refill and Test Drive

   Add fluid gradually and recheck level frequently to prevent overfilling.

Parts You May Need