| Code | What it means |
| P1500 | Starter Signal Circuit |
| P1501 | Theft Deterrent System |
| P1501 | Vehicle Speed Sensor Circuit Intermittent |
| P1502 | Theft Deterrent Fuel Enable Signal Not Received |
| P1503 | Theft Deterrent Fuel Enable Signal Not Correct |
| P1504 | Vehicle Speed Output Circuit |
| P1508 | Idle Speed Low - Idle Air Control (IAC) System NotResponding |
| P1509 | Idle Speed High - Idle Air Control (IAC) System NotResponding |
| P1510 | Throttle Control System Performance - Throttle Limitation Active |
| P1511 | Throttle Control System - Backup System Performance |
| P1514 | Airflow to TP Sensor Correlation High |
| P1515 | Electronic Throttle System Throttle Position |
| P1516 | Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance |
| P1517 | Electronic Throttle Module |
| P1518 | Electronic Throttle Module to PCM Communication |
| P1519 | Throttle Actuator Control (TAC) Module Internal Circuit |
| P1520 | Transmission Range Switch Circuit |
| P1521 | Transmission Engaged at High Throttle Angle |
| P1522 | Park/Neutral to Drive/Reverse at High RPM |
| P1523 | Throttle Closed Position Performance |
| P1524 | Throttle Closed Position Performance |
| P1525 | Throttle Body ServiceRequired |
| P1526 | Minimum Throttle Position Not Learned |
| P1527 | Transmission Range to Pressure Switch Correlation |
| P1528 | Governor |
| P1529 | Heated Windshield Request Problem |
| P1530 | Throttle Actuator Control (TAC) Module Internal Circuit |
| P1531 | A/C Low Side Temperature Sensor Fault |
| P1532 | A/C Evaporator Temp. Sens. Ckt. Low Voltage |
| P1533 | A/C Evaporator Temp. Sens. Ckt. High Voltage |
| P1534 | A/C High Side Temp. Sensor Low Voltage |
| P1535 | A/C High Side Temperature Sensor Circuit |
| P1536 | Engine Coolant Overtemperature - Air Conditioning (A/C) Disabled |
| P1537 | A/C Request Circuit Low Voltage |
| P1538 | A/C Request Circuit High Voltage |
| P1539 | A/C Clutch Status Circuit High Voltage |
| P1540 | Air Conditioning (A/C) Refrigerant Overpressure - Air Conditioning (A/C) Disabled |
| P1541 | A/C High Side Over Temperature |
| P1542 | A/C System High Pressure High Temperature |
| P1543 | A/C System Performance |
| P1544 | A/C Refrigerant Condition Very Low |
| P1545 | Air Conditioning (A/C) Clutch Relay Control Circuit |
| P1546 | A/C Clutch Status Circuit Low Voltage |
| P1547 | A/C System Performance Degraded |
| P1548 | A/C Recirculation Circuit |
| P1551 | Throttle Valve Rest Position Not Reached During Learn |
| P1554 | Cruise Control Feedback Circuit |
| P1555 | Electronic Variable Orifice Output |
| P1558 | Cruise Control Servo Indicates Low |
| P1559 | Cruise Control Power Management Mode |
| P1560 | Transaxle Not in Drive - Cruise Control Disabled |
| P1561 | Cruise Vent Solenoid |
| P1562 | Cruise Vacuum Solenoid |
| P1563 | Cruise Vehicle Speed/Set Speed Difference Too High |
| P1564 | Vehicle Acceleration Too High - Cruise Control Disabled |
| P1565 | Cruise Servo Position Sensor |
| P1566 | Engine RPM Too High - Cruise Control Disabled |
| P1567 | Active Banking Control Active - Cruise Control Disabled |
| P1568 | Cruise Servo Stroke Greater than Commanded in Cruise |
| P1569 | Cruise Servo Stroke High While not in Cruise |
| P1570 | Traction Control Active - Cruise Control Disabled |
| P1571 | Traction Control Torque Request Circuit |
| P1572 | ASR Active Circuit Low Too Long |
| P1573 | PCM/EBTCM Serial Data Circuit |
| P1574 | Stoplamp Switch Circuit |
| P1575 | Extended Travel Brake Switch Circuit |
| P1576 | BBV Sensor Ckt. High Voltage |
| P1577 | BBV Sensor Ckt. Low Voltage |
| P1578 | BBV Sensor Ckt. Low Vacuum |
| P1579 | P/N to D/R at High Throttle Angle - Power ReductionMode Active |
| P1580 | Cruise Move Circuit Low Voltage |
| P1581 | Cruise Move Circuit High Voltage |
| P1582 | Cruise Direction Circuit Low Voltage |
| P1583 | Cruise Direction CircuitHigh Voltage |
| P1584 | Cruise Control Disabled |
| P1585 | Cruise Control Inhibit Output Circuit |
| P1586 | Cruise Control Brake Switch 2 Circuit |
| P1587 | Cruise Control Clutch Control Circuit Low |
| P1588 | Cruise Control Clutch Control Circuit High |
| P1599 | Engine Stall or Near Stall Detected |
| P1600 | TCM Internal Watchdog Operation |
| P1601 | Serial Comm. Problem With Device 1 |
| P1602 | Knock Sensor (KS) Module Performance |
| P1603 | Loss of SDM Serial Data |
| P1604 | Loss of IPC Serial Data |
| P1605 | Loss of HVAC Serial Data |
| P1606 | Serial Communication Problem With Device 6 |
| P1607 | Serial Communication Problem With Device 7 |
| P1608 | Serial Communication Problem With Device 8 |
| P1609 | Loss Of TCS Serial Data |
| P1610 | Loss of PZM Serial Data |
| P1611 | Loss of CVRTD Serial Data |
| P1612 | Loss of IPM Serial Data |
| P1613 | Loss of DIM Serial Data |
| P1614 | Loss of RIM Serial Data |
| P1615 | Loss of VTD Serial Data |
| P1617 | Engine Oil Level Switch Circuit |
| P1619 | Engine Oil Life Monitor Reset Circuit |
| P1620 | Low Coolant Circuit |
| P1621 | Control Module Long Term Memory Performance |
| P1622 | Cylinder Select |
| P1623 | Transmission Temp Pull-Up Resistor |
| P1624 | Customer Snapshot Requested - Data Available |
| P1625 | TCM System Reset |
| P1626 | Theft Deterrent Fuel Enable Signal Not Received |
| P1627 | A/D Performance |
| P1628 | ECT Pull-Up Resistor |
| P1629 | Theft Deterrent System - Cranking Signal |
| P1630 | Theft Deterrent Learn Mode Active |
| P1631 | Theft Deterrent Start Enable Signal Not Correct |
| P1632 | Theft Deterrent Fuel Disable Signal Received |
| P1633 | Ignition 0 Switch Circuit |
| P1634 | Ignition 1 Switch Circuit |
| P1635 | 5 Volt Reference Circuit |
| P1636 | PCM Stack Overrun |
| P1637 | Generator L-Terminal Circuit |
| P1638 | Generator F-Terminal Circuit |
| P1639 | 5 Volt Reference 2 Circuit |
| P1640 | Driver-1-Input High Voltage |
| P1641 | Malfunction Indicator Lamp (MIL) Control Circuit |
| P1642 | Vehicle Speed Output Circuit |
| P1643 | Engine Speed Output Circuit |
| P1644 | Traction Control Delivered Torque Output Circuit |
| P1645 | Evaporative Emission (EVAP) Vent Solenoid Contol Circuit |
| P1646 | Erative Emission (EVAP) Vent Solenoid Control Circuit |
| P1647 | Driver 1 Line 7 |
| P1650 | Control Module Output B Circuit |
| P1651 | Fan 1 Relay Control Circuit |
| P1652 | Powertrain Induced Chassis Pitch Output Circuit |
| P1653 | Oil Level Lamp Control Circuit |
| P1654 | Cruise Control Inhibit Output Circuit |
| P1655 | EVAP Purge Solenoid Control Circuit |
| P1656 | Driver 2 Line 6 |
| P1657 | 1-4 Upshift Solenoid Control Circuit |
| P1658 | Starter Enable Relay Control Circuit |
| P1660 | Cooling Fan Control Circuits |
| P1661 | MIL Control Circuit |
| P1662 | Cruise Lamp Control Circuit |
| P1663 | Oil Life Lamp Control Circuit |
| P1664 | 1-4 Upshift Lamp Control Circuit |
| P1665 | Driver 3 Line 5 |
| P1666 | Driver 3 Line 6 |
| P1667 | Reverse Inhibit Solenoid Control Circuit |
| P1669 | ABS Unit Expected |
| P1670 | Driver 4 |
| P1671 | Driver 4 Line 1 |
| P1672 | Low Engine Oil Level Lamp Control Circuit |
| P1673 | Engine Hot Lamp Control Circuit |
| P1674 | Tachometer Control Circuit |
| P1675 | EVAP Vent Solenoid Control Circuit |
| P1676 | Driver 4 Line 6 |
| P1677 | Driver 4 Line 7 |
| P1680 | Driver 5 |
| P1681 | Driver 5 Line 1 |
| P1682 | Driver 5 Line 2 |
| P1683 | Driver 5 Line 3 |
| P1684 | Driver 5 Line 4 |
| P1685 | Invalid key recieved from the SmartKey immobilizermodule (the thingie in the ignition that makes sure you are using a correct key) |
| P1686 | Driver 5 Line 6 |
| P1687 | Driver 5 Line 7 |
| P1689 | Delivered Torque Circuit Fault |
| P1690 | ECM Loop Overrun |
| P1691 | Coolant Gage Circuit Low Voltage |
| P1692 | Coolant Gage Circuit High Voltage |
| P1693 | Tachometer Circuit Low Voltage |
| P1694 | Tachometer Circuit High Voltage |
| P1695 | Remote Keyless Entry Circuit Low |
| P1696 | Remote Keyless Entry Voltage High |
| P1700 | Transmission Control Module (TCM) Requested MIL Illumination |
| P1701 | Trans. MIL Request Circuit |
| P1705 | P/N Signal Output Circuit |
| P1740 | Torque Reduction Signal Circuit: Overdrive and TCCSolenoid Rationality |
| P1743 | TP Signal from ECM |
| P1760 | TCM Supply Voltage Interrupted |
| P1779 | Engine Torque Delivered to TCM Signal |
| P1780 | Park/Neutral Position [PNP] Switch Circuit |
| P1781 | Engine Torque Signal Circuit |
| P1790 | Transmission Control Module Checksum |
| P1791 | Transmission Control Module Loop |
| P1791 | Throttle/Pedal Position Signal (2000+) |
| P1792 | Transmission Control Module Reprogrammable Memory |
| P1792 | ECM to TCM Engine Coolant Signal |
| P1793 | Transmission Control Module Stack Overrun |
| P1793 | Wheel Speed Signal (2000+) |
| P1795 | CAN Bus - Throttle Body Position |
| P1800 | TCM Power Relay Control Circuit |
| P1801 | Performance Selector Switch Failure |
| P1804 | Ground Control Relay |
| P1810 | TFP Valve Position Switch Circuit |
| P1811 | Maximum Adapt and Long Shift |
| P1812 | Transmission Over Temperature Condition |
| P1813 | Torque Control |
| P1814 | Torque Converter Overstressed |
| P1815 | Transmission Range Switch - Start In Wrong Range |
| P1816 | TFP Valve Position Sw. - Park/Neu. With Drive Ratio |
| P1817 | TFP Valve Position Sw. - Reverse With Drive Ratio |
| P1818 | TFP Valve Position Sw. - Drive Without Drive Ratio |
| P1819 | Internal Mode Switch - No Start\Wrong Range |
| P1820 | Internal Mode Switch Circuit A Low |
| P1822 | Internal Mode Switch Circuit B High |
| P1823 | Internal Mode Switch Circuit P Low |
| P1825 | Internal Mode Switch - Invalid Range |
| P1826 | Internal Mode Switch Circuit C - High |
| P1831 | Pressure Control (PC) Solenoid Power Circuit - LowVoltage |
| P1832 | Pressure Control (PC)/Shift Lock Solenoid Control Circuit High Voltage |
| P1833 | A/T Solenoids Power Circuit - Low Voltage |
| P1834 | Torque Converter Clutch (TCC)/Shift Solenoid (SS) Control Circuit High Voltage |
| P1835 | Kick-Down Switch Circuit |
| P1836 | Kick-Down Switch Failed Open |
| P1837 | Kick-Down Switch Failed Short |
| P1842 | 1-2 Shift Solenoid Circuit Low Voltage |
| P1843 | 1-2 Shift Solenoid Circuit High Voltage |
| P1844 | Torque Reduction Signal Circuit Desired By TCM |
| P1845 | 2-3 Shift Solenoid Circuit Low Voltage |
| P1847 | 2-3 Shift Solenoid Circuit High Voltage |
| P1850 | Brake Band Apply Solenoid Circuit |
| P1851 | Brake Band Apply Solenoid Performance |
| P1852 | Brake Band Apply SolenoidLow Voltage |
| P1853 | Brake Band Apply Solenoid High Voltage |
| P1860 | TCC PWM Solenoid Circuit Electrical |
| P1864 | Torque Converter Clutch Circuit |
| P1865 | 4-5 Shift Solenoid (SS) Valve Control Circuit HighVoltage |
| P1866 | Torque Converter Clutch (TCC) Pulse Width Modulation (PWM) Solenoid Control Circuit Low Voltage |
| P1867 | Torque Converter Clutch (TCC) Pulse Width Modulation (PWM) Solenoid Control Circuit High Voltage |
| P1868 | Transmission Fluid Life |