2-3 Shift Malfunction (P0782)
The P0782 code indicates a problem with the 2-3 shift in an automatic transmission. This typically means the powertrain control module (PCM) has detected a malfunction in the shift solenoid or hydraulic circuit responsible for engaging second and third gears. Common causes include low or contaminated transmission fluid, a faulty shift solenoid, or internal transmission wear. Symptoms may include harsh shifting, slipping, or failure to shift into third gear.
01. Most Common Causes
- Low or dirty transmission fluid
- Faulty shift solenoid (A or B)
- Worn or damaged transmission valve body
- Internal transmission mechanical failure
02. Symptoms You Will Notice
- Harsh or delayed 2-3 upshift
- Transmission slipping or flaring between gears
- Check Engine Light illuminated
- Transmission stuck in second gear (limp mode)
03. Step-by-Step Diagnosis
Step 1: Scan for codes and check freeze frame data.
Step 2: Inspect transmission fluid level and condition; top off or replace if necessary.
Step 3: Test shift solenoid resistance and operation with a multimeter or scan tool.
Step 4: Perform a transmission pressure test to identify hydraulic issues.
Step 5: Inspect wiring and connectors for damage or corrosion.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it may cause further transmission damage. If the transmission is slipping or stuck in gear, have it towed to a shop.
How much does it cost to fix?▼
Costs vary: fluid change $50-$150, solenoid replacement $150-$400, valve body or transmission rebuild $1000-$3000+.