| P1500 | Vehicle Speed Sensor (VSS) (Mazda) |
| P1500 | Vehicle Speed Sensor (VSS) Intermittant (Ford) |
| P1501 | Vehicle Speed Sensor (VSS) Out Of Range (Ford) |
| P1502 | Vehicle Speed Sensor (VSS) Intermittant (Ford) |
| P1505 | Idle Air Control At Adaptive Clip (Mazda) |
| P1506 | Idle Air Control System Overspeed Error (Mazda) |
| P1506 | Idle Air Control System Overspeed Error (Ford) |
| P1507 | Idle Air Control System Underspeed Error (Mazda) |
| P1507 | Idle Air Control System Underspeed Error (Ford) |
| P1508 | Idle Air Control (IAC) System - Low RPM |
| P1508 | Idle Air Control Valve Circuit Failure (Acura) |
| P1516 | Inlet Manifold Runner Control Input Error (Bank 1) (Ford) |
| P1517 | Inlet Manifold Runner Control Input Error (Bank 2) (Ford) |
| P1518 | Inlet Manifold Runner Control Stuck Open (Ford) |
| P1519 | Malfunction In IAC Valve Circuit (Acura) |
| P1519 | Inlet Manifold Runner Control Stuck Closed (Ford) |
| P1520 | Intake Manifold Runner Control (IMRC) circuit malfunction |
| P1524 | Throttle Position (TP) Sensor Learned Closed Throttle Angle Degrees Out-Of-Range |
| P1527 | Trans Range / Pressure Switch Comparison |
| P1546 | Air Conditioning (A/C) Clutch Relay Control Circuit (GM) |
| P1549 | Intake Manifold Control Circuit Malfunction (Ford) |
| P1550 | PSP Sensor Malfunction (Ford) |
| P1554 | Cruise Engaged Circuit High Voltage |
| P1560 | Cruise Control System-Transaxle Not in Drive |
| P1564 | Cruise Control System-Vehicle Acceleration too high |
| P1566 | Cruise Control System-Engine RPM Too High |
| P1567 | Cruise Control- ABCS Active |
| P1570 | Cruise Control System - Traction Control Active |
| P1571 | Traction Control System PWM Circuit No Frequency |
| P1572 | Brake Pedal Switch Circuit (Ford) |
| P1574 | EBTCM System- Stop Lamp Switch Circuit High Voltage |
| P1575 | Extended Travel Brake Switch Circuit High Voltage |
| P1579 | Park/Neutral to Drive/Reverse At high Throttle Angle |
| P1585 | Cruise Control Inhibit Output Circuit (GM) |
| P1594 | Charging System Voltage Too High (Chrysler) |
| P1595 | Speed Control Solenoid Circuits (Chrysler) |
| P1596 | Speed Control Switch always High (Chrysler) |
| P1597 | Speed Control Switch always Low (Chrysler) |
| P1598 | A/C Pressure Sensor Volts Too High (Chrysler) |
| P1599 | A/C Pressure Sensor Volts Too Low (Chrysler) |
| P1599 | Engine Stall or Near Stall Detected |