Transmission Codes
651 OBD-II diagnostic trouble codes in this category.
Showing page 4 of 7 (651 codes total)
| Code | Description | Subsystem | Severity |
|---|---|---|---|
| P0991 | Transmission Fluid Pressure Sensor/Switch E Circuit Intermittent | Pressure Control | High |
| P0992 | Transmission Fluid Pressure Sensor/Switch F Circuit | Pressure Control | High |
| P0993 | Transmission Fluid Pressure Sensor/Switch F Circuit Range/Performance | Pressure Control | High |
| P0994 | Transmission Fluid Pressure Sensor/Switch F Circuit Low | Pressure Control | High |
| P0995 | Transmission Fluid Pressure Sensor/Switch F Circuit High | Pressure Control | High |
| P0996 | Transmission Fluid Pressure Sensor/Switch F Circuit Intermittent | Pressure Control | High |
| P0997 | Shift Solenoid F Control Circuit Range/Performance | Shift Solenoid | High |
| P0998 | Shift Solenoid F Control Circuit Low | Shift Solenoid | High |
| P0999 | Shift Solenoid F Control Circuit High | Shift Solenoid | High |
| P1126 | Magnetic Clutch Circuit Malfunction (Lexus) | Transmission Control | Medium |
| P1153 | Bank 2 Fuel Control Shifted Lean | Transmission Control | Medium |
| P1308 | A/C Clutch Circuit Fault (Ford) | Transmission Control | Medium |
| P1458 | A/C Compressor Clutch Signal Fault (Kia) | Transmission Control | Medium |
| P1479 | Transmission Fan Relay Circuit Open Or Shorted (Dodge) | Transmission Control | High |
| P1521 | Transmission Engaged At High Throttle Angle (Buick) | Transmission Control | Medium |
| P1539 | Air Conditioning (A/C) Clutch Feedback Circuit High Voltage (Buick) | Transmission Control | Medium |
| P1587 | Cruise Control Clutch Control Circuit Low (Buick) | Transmission Control | Medium |
| P1588 | Cruise Control Clutch Control Circuit High (Buick) | Transmission Control | Medium |
| P1611 | Serial Communicating Link Transmission Control Module (Bmw) | Transmission Control | Medium |
| P1656 | Automatic Transmission System Malfunction (Acura) | Transmission Control | Medium |
| P1657 | 1-4 Upshift Solenoid Control Circuit (Buick) | Transmission Control | Medium |
| P1664 | 1-4 Upshift Lamp Control Circuit (Buick) | Transmission Control | Medium |
| P1700 | Transmission MIL Request (Buick) | Transmission Control | Medium |
| P1701 | Transmission MIL Request Circuit (Buick) | Transmission Control | Medium |
| P1702 | Transmission system problems (Ford) | Transmission Control | Medium |
| P1704 | Transmission system problems (Ford) | Transmission Control | Medium |
| P1705 | TCM A/T Gear Position Switch Circuit Shorted (Acura) | Transmission Control | High |
| P1706 | TCM A/T Gear Position Switch Circuit Open (Acura) | Transmission Control | Medium |
| P1708 | Clutch Switch Circuit (Mazda) | Transmission Control | Medium |
| P1709 | Automatic Transmission System Malfunction (Acura) | Transmission Control | Medium |
| P1710 | Transmission system problems (Ford) | Transmission Control | Medium |
| P1711 | Transmission Fluid Temperature Sensor Out of Self-Test Range (Ford) | Transmission Control | Medium |
| P1719 | Skip Shift Solenoid Circuit Open Or Shorted (Chrysler) | Transmission Control | High |
| P1721 | Gear 1 Incorrect Ratio (Ford) | Transmission Control | Medium |
| P1722 | Gear 2 Incorrect Ratio (Ford) | Transmission Control | Medium |
| P1723 | Gear 3 Incorrect Ratio (Ford) | Transmission Control | Medium |
| P1724 | Gear 4 Incorrect Ratio (Ford) | Transmission Control | Medium |
| P1727 | Coast Clutch Solenoid Inductive Signature Malfunction (Ford) | Transmission Control | Medium |
| P1728 | Transmission Slip Error (Ford) | Transmission Control | Medium |
| P1730 | Gear Control Malfunction 2 3 5 (Jaguar) | Transmission Control | Medium |
| P1731 | 1-2 Shift Malfunction (Ford) | Transmission Control | Medium |
| P1732 | 2-3 Shift Malfunction (Ford) | Transmission Control | Medium |
| P1733 | 3-4 Shift Malfunction (Ford) | Transmission Control | Medium |
| P1735 | First Gear Switch Circuit Failure (Mazda) | Transmission Control | Medium |
| P1736 | Second Gear Switch Circuit Failure (Mazda) | Transmission Control | Medium |
| P1738 | Automatic Transmission System Malfunction (Acura) | Transmission Control | Medium |
| P1739 | Automatic Transmission System Malfunction (Acura) | Transmission Control | Medium |
| P1740 | Transmission Torque Reduction Request Circuit (Buick) | Transmission Control | Medium |
| P1741 | Torque Converter Clutch Control Error (Ford) | Transmission Control | Medium |
| P1742 | Torque Converter Clutch Solenoid Faulty (Ford) | Transmission Control | Medium |
| P1745 | Transmission system problems (Ford) | Transmission Control | Medium |
| P1746 | Transmission Control Module Output Stage (Bmw) | Transmission Control | Medium |
| P1748 | Transmission Control Module Self Test (Bmw) | Transmission Control | Medium |
| P1752 | Transmission Shift Solenoid A Circuit Shorted (Mazda) | Transmission Control | High |
| P1754 | Coast Clutch Solenoid Circuit Malfunction (Ford) | Transmission Control | Medium |
| P1761 | Shift Solenoid Malfunction (Bmw) | Transmission Control | Medium |
| P1766 | Shift Solenoid D Performance (Ford) | Transmission Control | Medium |
| P1767 | Torque Converter Clutch Circuit Malfunction (Ford) | Transmission Control | Medium |
| P1768 | Automatic Transmission System Malfunction (Acura) | Transmission Control | Medium |
| P1769 | AG4 Transmission Torque Modulation Fault | Transmission Control | Medium |
| P1771 | Throttle Position Sensor Circuit Open To Transmission Control Module (Mazda) | Transmission Control | Medium |
| P1772 | Throttle Position Sensor Circuit Shorted To Transmission Control Module (Mazda) | Transmission Control | High |
| P1773 | Automatic Transmission System Malfunction (Acura) | Transmission Control | Medium |
| P1775 | Transmission System MIL Fault (Jaguar) | Transmission Control | Medium |
| P1778 | Transmission Reverse IP Circuit (Jaguar) | Transmission Control | Medium |
| P1783 | Transmission Over-Temperature Condition (Ford) | Transmission Control | Medium |
| P1784 | Transmission Mechanical Failure First And Reverse (Ford) | Transmission Control | Medium |
| P1785 | Transmission Mechanical Failure First And Second (Ford) | Transmission Control | Medium |
| P1786 | 3-2 Downshift Error (Ford) | Transmission Control | Medium |
| P1787 | 2-1 Downshift Error (Ford) | Transmission Control | Medium |
| P1788 | Automatic Transmission System Malfunction (Acura) | Transmission Control | Medium |
| P1792 | Transmission Control Module Reprogrammable Memory (Buick) | Transmission Control | Medium |
| P1793 | Automatic Transmission System Malfunction (Acura) | Transmission Control | Medium |
| P1795 | Automatic Transmission System Malfunction (Acura) | Transmission Control | Medium |
| P1800 | Transmission Clutch Interlock Safety Switch Circuit Failure | Transmission Control | Medium |
| P1802 | Transmission Clutch Interlock Safety Switch Short Circuit To Battery | Transmission Control | High |
| P1803 | Transmission Clutch Interlock Safety Switch Short Circuit To Ground | Transmission Control | High |
| P1805 | Transmission 4-Wheel Drive High Indicator Open Circuit | Transmission Control | High |
| P1806 | Transmission 4-Wheel Drive High Indicator Short Circuit To Battery (Ford) | Transmission Control | High |
| P1807 | Transmission 4-Wheel Drive High Indicator Short Circuit To Ground | Transmission Control | High |
| P1808 | Transmission 4-Wheel Drive Low Indicator Circuit Failure (Ford) | Transmission Control | Medium |
| P1809 | Transmission 4-Wheel Drive Low Indicator Open Circuit | Transmission Control | High |
| P1811 | Maximum Adapt And Long Shift (Buick) | Transmission Control | Medium |
| P1812 | Transmission Over Temperature Condition (Buick) | Transmission Control | Medium |
| P1814 | Torque Converter Overstressed (Buick) | Transmission Control | Medium |
| P1815 | Transmission Range Switch Start In Wrong Range (Buick) | Transmission Control | Medium |
| P1824 | Transmission 4-Wheel Drive Clutch Relay Circuit Failure (Ford) | Transmission Control | Medium |
| P1827 | Transmission 4-Wheel Drive Low Clutch Relay Circuit To Ground | Transmission Control | Medium |
| P1830 | Open Or Shorted Condition Detected In The Clutch Pedal Switch Override Relay Control (Chrysler) | Transmission Control | High |
| P1832 | Transmission Transfer Case Differential Lock-Up Solenoid Circuit Failure (Ford) | Transmission Control | Medium |
| P1834 | Transmission Transfer Case Differential Lock-Up Solenoid Short Circuit To Battery (Ford) | Transmission Control | High |
| P1838 | Transmission Transfer Case Shift Motor Circuit Failure (Ford) | Transmission Control | Medium |
| P1839 | Transmission Transfer Case Shift Motor Open Circuit | Transmission Control | High |
| P1840 | Transmission Transfer Case Shift Motor Short Circuit To Battery | Transmission Control | High |
| P1841 | Transmission Transfer Case Shift Motor Short Circuit To Ground | Transmission Control | High |
| P1842 | 1-2 Shift Solenoid Circuit Low Voltage (Buick) | Transmission Control | Medium |
| P1843 | 1-2 Shift Solenoid Circuit High Voltage (Buick) | Transmission Control | Medium |
| P1845 | Transmission Gear Ratio Output Circuit (Buick) | Transmission Control | Medium |
| P1846 | Transmission Transfer Case Contact Plate A Circuit Failure (Ford) | Transmission Control | Medium |
| P1847 | 2-3 Shift Solenoid Circuit High Voltage (Buick) | Transmission Control | Medium |
About Transmission Codes
This page lists all 651 OBD-II diagnostic trouble codes classified under the Transmission category. These codes are stored by your vehicle's onboard computer when a sensor detects a malfunction in the transmission system. Each code begins with a letter indicating the system (P for Powertrain, B for Body, C for Chassis, U for Network) followed by four digits that identify the specific fault.
When your check engine light comes on, an OBD-II scanner reads these stored codes to help pinpoint the problem. Generic codes (where the second digit is 0) follow the SAE J2012 standard and mean the same thing on every vehicle. Manufacturer-specific codes (where the second digit is 1) may have different meanings depending on the vehicle brand.
Click any code in the table above to see its full description, possible causes, common symptoms, and step-by-step repair guidance. Use the search box to quickly find a specific code within this category.