92 Generic diagnostic codes on file — with the full diagnosis, repair steps, and field insights open to read free, no signup required.
Disclaimer: General reference information for trained, qualified technicians only. Codes and procedures vary by model, serial number and software version. Always follow the manufacturer's service manual and your site's safety procedures. Use at your own risk. Not affiliated with or endorsed by any manufacturer.
| Code | System | Symptom | Full fix |
|---|---|---|---|
| P0748 | Transmission | Trans Warning Active / Default Line Pressures | View fix |
| P0749 | Transmission | Shift Quality Fluctuates Wildly | View fix |
| P0750 | Transmission | Transmission Misses Gears / Limp Mode Active | View fix |
| P0751 | Transmission | Transmission Skips Targeted Gears | View fix |
| P0752 | Transmission | Transmission Locked in 1st or Low Gears | View fix |
| P0753 | Transmission | Trans Light Active / Missed Shift Steps | View fix |
| P0754 | Transmission | Misses Upshifts Periodically over Bumps | View fix |
| P0755 | Transmission | Transmission Misses 2nd or 3rd Gear Gates | View fix |
| P0756 | Transmission | Gear Skipping Symptoms Active | View fix |
| P0757 | Transmission | Transmission Stays Locked in Higher Gears | View fix |
| P0758 | Transmission | Trans Light Active / Default Gear Modes | View fix |
| P0759 | Transmission | Erratic Shift Behavior during Acceleration | View fix |
| P0760 | Transmission | Transmission Fails to Select 3rd or 4th Gear Steps | View fix |
| P0761 | Transmission | Gear Selection Fails under Overdrive Request | View fix |
| P0762 | Transmission | Transmission Trapped in 3rd Gear State | View fix |
| P0763 | Transmission | Trans Light Active / Missed Upper Shift Gates | View fix |
| P0764 | Transmission | Transmission Shudders Briefly during Cruise Upshifts | View fix |
| P0765 | Transmission | Transmission Misses 4th Gear Overdrive Gate | View fix |
| P0766 | Transmission | Overdrive Gear Engagement Drops Out | View fix |
| P0767 | Transmission | Transmission Trapped inside 4th Gear Envelopes | View fix |
| P0768 | Transmission | Trans Light On / Default Limp Modes Engaged | View fix |
| P0769 | Transmission | Erratic Overdrive Performance over Rough Roads | View fix |
| P0770 | Transmission | Transmission Refuses to Enter Final Overdrive Gear | View fix |
| P0771 | Transmission | Transmission Skips Top Gear Step down Shifts | View fix |
| P0772 | Transmission | Transmission Trapped permanently in Top Gear | View fix |
| P0773 | Transmission | Trans Light On / Transmission Defaults to Limp | View fix |
| P0774 | Transmission | Top Gear Upshifts Drop Out Periodically | View fix |
| P0780 | Transmission | Transmission Hunts for Gears Constantly | View fix |
| P0781 | Transmission | Engine Flares or Freezes during 1-2 Upshift | View fix |
| P0782 | Transmission | Engine Flares or Freezes during 2-3 Upshift | View fix |
| P0783 | Transmission | Engine Flares or Freezes during 3-4 Upshift | View fix |
| P0784 | Transmission | Engine Flares or Freezes during 4-5 Upshift | View fix |
| P0785 | Transmission | Transmission Slips / Harsh Intermittent Shifts | View fix |
| P0786 | Transmission | Clunky Shift Timing / Transmission Light On | View fix |
| P0787 | Transmission | Harsh Quick Slamming Shift Actions | View fix |
| P0788 | Transmission | Soft Long Slipping Gear Engagements | View fix |
| P0789 | Transmission | Shift Hardness Changes Randomly while Driving | View fix |
| P0790 | Transmission | Transmission Refuses to Enter Sport Mode Maps | View fix |
| P0801 | Transmission | Shifter Allows Accidentally Slipping into Reverse | View fix |
| P0803 | Transmission | Manual Shifter Skips 2nd/3rd Gears / Hard Shifts | View fix |
| P0804 | Transmission | Skip Shift Dash Light Fails to Illuminate | View fix |
| U0101 | Network | Transmission Won't Shift | View fix |
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