55 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 |
|---|---|---|---|
| P0100 | Air Intake | Engine Stumbles / MIL On | View fix |
| P0101 | Air Intake | Black Smoke / Sluggish Response | View fix |
| P0102 | Air Intake | Rich Run / Idle Drop | View fix |
| P0103 | Air Intake | Lean Surging / Engine Ping | View fix |
| P0104 | Air Intake | Intermittent Misfire / Jerking | View fix |
| P0105 | Air Intake | Hard Start / Heavy Exhaust Odor | View fix |
| P0106 | Air Intake | Backfire / Poor Acceleration | View fix |
| P0107 | Air Intake | Black Exhaust Smoke / Low Idle | View fix |
| P0108 | Air Intake | Severe Misfire / Stalling | View fix |
| P0109 | Air Intake | Intermittent Stumble under Load | View fix |
| P0110 | Air Intake | MIL On / Slightly Rich Mix | View fix |
| P0111 | Air Intake | Cold Start Hesitation | View fix |
| P0112 | Air Intake | Hard Starting when Cold | View fix |
| P0113 | Air Intake | High Fuel Consumption | View fix |
| P0113 | Air Intake | Black Smoke on Startup | View fix |
| P0114 | Air Intake | Erratic Driving / Sudden Stumbles | View fix |
| P0120 | Air Intake | Limp Mode / Stiff Throttle Pedal | View fix |
| P0121 | Air Intake | Stumble on Acceleration / Surge | View fix |
| P0122 | Air Intake | Low Idle / Dead Pedal Response | View fix |
| P0123 | Air Intake | Engine RPM High / Sudden Acceleration | View fix |
| P0124 | Air Intake | Bucking / Jerking During Cruise | View fix |
| P0171 | Air Intake | Poor Acceleration / Lean | View fix |
| P0171 | Fuel System | Rough Idle / Lean Stumble | View fix |
| P0173 | Fuel System | Engine Surges on Deceleration | View fix |
| P0220 | Air Intake | Limp Mode / Check Engine Light | View fix |
| P0221 | Air Intake | Dead Pedal Zones / Hesitation | View fix |
| P0222 | Air Intake | Engine Idles Only / Forced Idle Mode | View fix |
| P0223 | Air Intake | Forced Limp Mode / High Engine Speed | View fix |
| P0224 | Air Intake | Sudden Brief Drops in Engine Response | View fix |
| P0225 | Air Intake | Limp Mode Actuated | View fix |
| P0226 | Air Intake | Dead Accelerator Pedal Operation | View fix |
| P0227 | Air Intake | Engine Forced into Low Idle State | View fix |
| P0228 | Air Intake | Immediate Acceleration Limp Mode | View fix |
| P0229 | Air Intake | Erratic Pedal Behavior on Rough Terrain | View fix |
| P0234 | Air Intake | Sudden Engine Cutout Under Acceleration | View fix |
| P0235 | Air Intake | No Boost Pressure / Slow Acceleration | View fix |
| P0236 | Air Intake | Turbo Lag / Black Smoke under Load | View fix |
| P0237 | Air Intake | Severe Underboost / No Turbo Power | View fix |
| P0238 | Air Intake | Limp Mode / Harsh Fuel Cutout | View fix |
| P0239 | Air Intake | Loss of Twin Turbo Synchronization | View fix |
| P0240 | Air Intake | Poor Twin Turbo Transition Response | View fix |
| P0241 | Air Intake | Engine Flat Under High Power Demands | View fix |
| P0242 | Air Intake | Engine Limits Power to Save Intake Components | View fix |
| P0243 | Air Intake | No Boost Control / Wastegate Stays Open | View fix |
| P0244 | Air Intake | Boost Spikes / Overboost Cutouts | View fix |
| P0245 | Air Intake | Overboost / Wastegate Stuck Closed | View fix |
| P0246 | Air Intake | No Boost / Lazy Turbocharger Response | View fix |
| P0247 | Air Intake | Twin Turbo Boost Control Loss | View fix |
| P0248 | Air Intake | Erratic Boost Curves on Twin Turbo Systems | View fix |
| P0249 | Air Intake | Secondary Turbo Boost Spikes | View fix |
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