2-3 Shift Malfunction
What does P0782 mean?
The P0782 code means the vehicle's onboard diagnostic system has detected: 2-3 Shift Malfunction. This is a critical severity code.
Common Symptoms
- Check Engine Light illuminated
- Harsh or no 2-3 upshift
- RPM flare between second and third gear
- Vehicle stuck in second gear
Probable Causes (Ranked by Likelihood)
- Faulty 2-3 shift solenoid Very High
- Worn 2-3 clutch pack High
- 2-3 accumulator piston fault Moderate
- Valve body 2-3 shift valve stuck Moderate
Step-by-Step Diagnostic Procedure
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Monitor 2-3 shift timing and quality on a scan tool
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Check 2-3 shift solenoid operation
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Perform line pressure test during 2-3 shift
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Check 2-3 accumulator
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Internal inspection may be needed for clutch pack wear
Frequently Asked Questions
Can I drive with code P0782?
Drive short distances only. Shift malfunction codes indicate the transmission is not shifting correctly, which can cause further damage.
What does P0782 mean?
2-3 Shift Malfunction. This means the TCM has detected that a shift event is not occurring as expected. The cause can range from a faulty solenoid to internal transmission wear.
Will a transmission flush fix P0782?
A fluid flush alone rarely fixes shift malfunction codes. However, if the fluid is contaminated, a flush combined with solenoid replacement may resolve the issue. Never flush a transmission with heavily burnt fluid, as it can dislodge debris and cause further damage.