504 Generic diagnostic codes on file. Each shows the symptom for free — unlock the full diagnosis, repair steps, and field insights with a free account.
| Code | System | Symptom | Fix |
|---|---|---|---|
| P0746 | Transmission | Soft Slipping Shifts / Burned Clutch Packs | Unlock |
| P0747 | Transmission | Extremely Harsh Shifting / Solenoid Locked | Unlock |
| P0748 | Transmission | Trans Warning Active / Default Line Pressures | Unlock |
| P0749 | Transmission | Shift Quality Fluctuates Wildly | Unlock |
| P0750 | Transmission | Transmission Misses Gears / Limp Mode Active | Unlock |
| P0751 | Transmission | Transmission Skips Targeted Gears | Unlock |
| P0752 | Transmission | Transmission Locked in 1st or Low Gears | Unlock |
| P0753 | Transmission | Trans Light Active / Missed Shift Steps | Unlock |
| P0754 | Transmission | Misses Upshifts Periodically over Bumps | Unlock |
| P0755 | Transmission | Transmission Misses 2nd or 3rd Gear Gates | Unlock |
| P0756 | Transmission | Gear Skipping Symptoms Active | Unlock |
| P0757 | Transmission | Transmission Stays Locked in Higher Gears | Unlock |
| P0758 | Transmission | Trans Light Active / Default Gear Modes | Unlock |
| P0759 | Transmission | Erratic Shift Behavior during Acceleration | Unlock |
| P0760 | Transmission | Transmission Fails to Select 3rd or 4th Gear Steps | Unlock |
| P0761 | Transmission | Gear Selection Fails under Overdrive Request | Unlock |
| P0762 | Transmission | Transmission Trapped in 3rd Gear State | Unlock |
| P0763 | Transmission | Trans Light Active / Missed Upper Shift Gates | Unlock |
| P0764 | Transmission | Transmission Shudders Briefly during Cruise Upshifts | Unlock |
| P0765 | Transmission | Transmission Misses 4th Gear Overdrive Gate | Unlock |
| P0766 | Transmission | Overdrive Gear Engagement Drops Out | Unlock |
| P0767 | Transmission | Transmission Trapped inside 4th Gear Envelopes | Unlock |
| P0768 | Transmission | Trans Light On / Default Limp Modes Engaged | Unlock |
| P0769 | Transmission | Erratic Overdrive Performance over Rough Roads | Unlock |
| P0770 | Transmission | Transmission Refuses to Enter Final Overdrive Gear | Unlock |
| P0771 | Transmission | Transmission Skips Top Gear Step down Shifts | Unlock |
| P0772 | Transmission | Transmission Trapped permanently in Top Gear | Unlock |
| P0773 | Transmission | Trans Light On / Transmission Defaults to Limp | Unlock |
| P0774 | Transmission | Top Gear Upshifts Drop Out Periodically | Unlock |
| P0780 | Transmission | Transmission Hunts for Gears Constantly | Unlock |
| P0781 | Transmission | Engine Flares or Freezes during 1-2 Upshift | Unlock |
| P0782 | Transmission | Engine Flares or Freezes during 2-3 Upshift | Unlock |
| P0783 | Transmission | Engine Flares or Freezes during 3-4 Upshift | Unlock |
| P0784 | Transmission | Engine Flares or Freezes during 4-5 Upshift | Unlock |
| P0785 | Transmission | Transmission Slips / Harsh Intermittent Shifts | Unlock |
| P0786 | Transmission | Clunky Shift Timing / Transmission Light On | Unlock |
| P0787 | Transmission | Harsh Quick Slamming Shift Actions | Unlock |
| P0788 | Transmission | Soft Long Slipping Gear Engagements | Unlock |
| P0789 | Transmission | Shift Hardness Changes Randomly while Driving | Unlock |
| P0790 | Transmission | Transmission Refuses to Enter Sport Mode Maps | Unlock |
| P0801 | Transmission | Shifter Allows Accidentally Slipping into Reverse | Unlock |
| P0803 | Transmission | Manual Shifter Skips 2nd/3rd Gears / Hard Shifts | Unlock |
| P0804 | Transmission | Skip Shift Dash Light Fails to Illuminate | Unlock |
| P0AC4 | Hybrid/Electric | Vehicle Won't Ready / No Start | Unlock |
| P2002 | Emissions / DPF | DPF Warning Lamp / Low Fuel Economy | Unlock |
| P204F | Emissions | Reduced Power / DEF Lamp | Unlock |
| P20EE | Emissions / SCR | AdBlue Lamp / Active Derate Warning | Unlock |
| P2181 | Cooling | Temp Gauge Stays Low / MIL On | Unlock |
| P219A | Fuel System | Rough Idle / Light Surge | Unlock |
| P2263 | Turbo | Whistling / Low Power | Unlock |
AM Fleet Integrity gives you QR-code operator reporting, preventive maintenance scheduling, and predictive alerts in one place. Start your 14-day free trial — no credit card required.
Start your free trial