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 |
|---|---|---|---|
| P0501 | Vehicle Speed | Speedometer Erratic / Cruise Control Drops | Unlock |
| P0502 | Vehicle Speed | Speedometer Fixed at 0 / Limp Shifts | Unlock |
| P0503 | Vehicle Speed | Speedometer Needle Jumps Wildly | Unlock |
| P0505 | Air Intake | Engine Idle Surges Wildly / Stalls | Unlock |
| P0506 | Air Intake | Low Rough Idle / Vibrating Steering | Unlock |
| P0507 | Air Intake | High Idle Speed / Racing Engine at Stops | Unlock |
| P050B | Ignition | Rough Cold Start / Stumble | Unlock |
| P0510 | Air Intake | Engine Drops to Idle Unexpectedly | Unlock |
| P0520 | Lubrication | Oil Pressure Gauge Fixed / Warning Light On | Unlock |
| P0521 | Lubrication | Oil Light Flickers / Gauge Unstable | Unlock |
| P0522 | Lubrication | Oil Pressure Light On At All Times | Unlock |
| P0523 | Lubrication | Gauge Pinned to Top Limit Rail | Unlock |
| P0530 | HVAC | AC Compressor Clutch Fails to Click On | Unlock |
| P0531 | HVAC | AC Cuts In and Out Rapidly | Unlock |
| P0532 | HVAC | AC Inoperative Always | Unlock |
| P0533 | HVAC | AC Compressor Blows Relief Pressure | Unlock |
| P0534 | HVAC | AC Blows Warm Air Always | Unlock |
| P0550 | Steering | Idle Drops and Stalls during Tight Parking Turns | Unlock |
| P0551 | Steering | Idle Hunts Wildly when Turning Wheel | Unlock |
| P0552 | Steering | MIL On Only | Unlock |
| P0553 | Steering | MIL On / Engine Idle Speed Raised | Unlock |
| P0554 | Steering | Idle Stumbles Periodically when Parking | Unlock |
| P0560 | Electrical | Random System Warnings / Dim Dash Lights | Unlock |
| P0561 | Electrical | Gauges Sweeping / Radio Resets | Unlock |
| P0562 | Electrical | Transmission Falls to 3rd Gear Limp Mode | Unlock |
| P0563 | Electrical | Blown Headlamp Bulbs / Module Fires | Unlock |
| P0565 | Cruise Control | Cruise Control Refuses to Turn On | Unlock |
| P0566 | Cruise Control | Cruise Control Stays Engaged / Safety Fault | Unlock |
| P0567 | Cruise Control | Resume Feature Fails to Function | Unlock |
| P0568 | Cruise Control | Speed Setting Feature Inoperative | Unlock |
| P0569 | Cruise Control | Coast Speed Trim Down Fails | Unlock |
| P0570 | Cruise Control | Acceleration Speed Trim Up Fails | Unlock |
| P0571 | Braking | Cruise Control Disengages / Brake Lights Dead | Unlock |
| P0572 | Braking | Cruise Drops Out over Bumps | Unlock |
| P0573 | Braking | Cruise Control Inoperative Always | Unlock |
| P0574 | Cruise Control | Cruise System Disabled Warning On | Unlock |
| P0575 | Cruise Control | Cruise Control Active Light Stays Dead | Unlock |
| P0576 | Cruise Control | Cruise System Refuses Command Inputs | Unlock |
| P0578 | Cruise Control | Cruise Function Drops Out Randomly | Unlock |
| P0579 | Cruise Control | MIL On Only | Unlock |
| P0580 | Cruise Control | Cruise Control Dead | Unlock |
| P0600 | Communication | No Start / Dash Lights Dead / Hard Limp | Unlock |
| P0601 | Computer | No Crank / Instrument Cluster Sweeps | Unlock |
| P0602 | Computer | No Start / Engine Light Dead | Unlock |
| P0603 | Computer | Radio Presets Lost / Periodic Limp Mode | Unlock |
| P0604 | Computer | Engine Cuts Out Dead / Critical Error | Unlock |
| P0605 | Computer | No-Start / Cooling Fans Run Constantly | Unlock |
| P0606 | Control Module | Engine Stalls / No Crank | Unlock |
| P0606 | Computer | Sudden Engine Stall / Complete Shutdown | Unlock |
| P0606 | Electrical | No Crank | Unlock |
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