OBD2 · Powertrain
P09xx codes: transmission — automated manual, hydraulics and pressure control
100 codes in this range, all generic — the same meaning on every make. Automatic, dual-clutch and automated manual transmissions: shift and pressure-control solenoids, speed sensors, gear-ratio monitoring, the torque converter clutch, fluid temperature and pressure, range sensors and transfer cases.
What usually causes codes in this area
- Low, old or wrong transmission fluid
- Failed solenoids or speed sensors
- Wiring and connectors at the transmission
- Internal wear — clutches, bands, the torque converter
Can you keep driving?
Drive gently and get it diagnosed soon. If the transmission is in limp mode, slipping or shifting harshly, keep driving to a minimum — carrying on can turn a sensor fault into a rebuild.
All P09xx codes
| Code | Meaning |
|---|---|
| P0900 | Clutch Actuator Circuit/Open |
| P0901 | Clutch Actuator Circuit Range/Performance |
| P0902 | Clutch Actuator Circuit Low |
| P0903 | Clutch Actuator Circuit High |
| P0904 | Gate Select Position Circuit |
| P0905 | Gate Select Position Circuit Range/Performance |
| P0906 | Gate Select Position Circuit Low |
| P0907 | Gate Select Position Circuit High |
| P0908 | Gate Select Position Circuit Intermittent |
| P0909 | Gate Select Control Error |
| P0910 | Gate Select Actuator Circuit/Open |
| P0911 | Gate Select Actuator Circuit Range/Performance |
| P0912 | Gate Select Actuator Circuit Low |
| P0913 | Gate Select Actuator Circuit High |
| P0914 | Gear Shift Position Circuit |
| P0915 | Gear Shift Position Circuit Range/Performance |
| P0916 | Gear Shift Position Circuit Low |
| P0917 | Gear Shift Position Circuit High |
| P0918 | Gear Shift Position Circuit Intermittent |
| P0919 | Gear Shift Position Control Error |
| P0920 | Gear Shift Forward Actuator Circuit/Open |
| P0921 | Gear Shift Forward Actuator Circuit Range/Performance |
| P0922 | Gear Shift Forward Actuator Circuit Low |
| P0923 | Gear Shift Forward Actuator Circuit High |
| P0924 | Gear Shift Reverse Actuator Circuit/Open |
| P0925 | Gear Shift Reverse Actuator Circuit Range/Performance |
| P0926 | Gear Shift Reverse Actuator Circuit Low |
| P0927 | Gear Shift Reverse Actuator Circuit High |
| P0928 | Gear Shift Lock Solenoid Control Circuit/Open |
| P0929 | Gear Shift Lock Solenoid Control Circuit Range/Performance |
| P0930 | Gear Shift Lock Solenoid Control Circuit Low |
| P0931 | Gear Shift Lock Solenoid Control Circuit High |
| P0932 | Hydraulic Pressure Sensor Circuit |
| P0933 | Hydraulic Pressure Sensor Circuit Range/Performance |
| P0934 | Hydraulic Pressure Sensor Circuit Low |
| P0935 | Hydraulic Pressure Sensor Circuit High |
| P0936 | Hydraulic Pressure Sensor Circuit Intermittent |
| P0937 | Hydraulic Oil Temperature Sensor Circuit |
| P0938 | Hydraulic Oil Temperature Sensor Circuit Range/Performance |
| P0939 | Hydraulic Oil Temperature Sensor Circuit Low |
| P0940 | Hydraulic Oil Temperature Sensor Circuit High |
| P0941 | Hydraulic Oil Temperature Sensor Circuit Intermittent |
| P0942 | Hydraulic Pressure Unit |
| P0943 | Hydraulic Pressure Unit Cycling Period Too Short |
| P0944 | Hydraulic Pressure Unit Loss of Pressure |
| P0945 | Hydraulic Pump Relay Circuit/Open |
| P0946 | Hydraulic Pump Relay Circuit Range/Performance |
| P0947 | Hydraulic Pump Relay Circuit Low |
| P0948 | Hydraulic Pump Relay Circuit High |
| P0949 | Auto Shift Manual Adaptive Learning Not Complete |
| P0950 | Auto Shift Manual Control Circuit |
| P0951 | Auto Shift Manual Control Circuit Range/Performance |
| P0952 | Auto Shift Manual Control Circuit Low |
| P0953 | Auto Shift Manual Control Circuit High |
| P0954 | Auto Shift Manual Control Circuit Intermittent |
| P0955 | Auto Shift Manual Mode Circuit |
| P0956 | Auto Shift Manual Mode Circuit Range/Performance |
| P0957 | Auto Shift Manual Mode Circuit Low |
| P0958 | Auto Shift Manual Mode Circuit High |
| P0959 | Auto Shift Manual Mode Circuit Intermittent |
| P0960 | Pressure Control Solenoid "A" Control Circuit/Open |
| P0961 | Pressure Control Solenoid "A" Control Circuit Range/Performance |
| P0962 | Pressure Control Solenoid "A" Control Circuit Low |
| P0963 | Pressure Control Solenoid "A" Control Circuit High |
| P0964 | Pressure Control Solenoid "B" Control Circuit/Open |
| P0965 | Pressure Control Solenoid "B" Control Circuit Range/Performance |
| P0966 | Pressure Control Solenoid "B" Control Circuit Low |
| P0967 | Pressure Control Solenoid "B" Control Circuit High |
| P0968 | Pressure Control Solenoid "C" Control Circuit/Open |
| P0969 | Pressure Control Solenoid "C" Control Circuit Range/Performance |
| P0970 | Pressure Control Solenoid "C" Control Circuit Low |
| P0971 | Pressure Control Solenoid "C" Control Circuit High |
| P0972 | Shift Solenoid "A" Control Circuit Range/Performance |
| P0973 | Shift Solenoid "A" Control Circuit Low |
| P0974 | Shift Solenoid "A" Control Circuit High |
| P0975 | Shift Solenoid "B" Control Circuit Range/Performance |
| P0976 | Shift Solenoid "B" Control Circuit Low |
| P0977 | Shift Solenoid "B" Control Circuit High |
| P0978 | Shift Solenoid "C" Control Circuit Range/Performance |
| P0979 | Shift Solenoid "C" Control Circuit Low |
| P0980 | Shift Solenoid "C" Control Circuit High |
| P0981 | Shift Solenoid "D" Control Circuit Range/Performance |
| P0982 | Shift Solenoid "D" Control Circuit Low |
| P0983 | Shift Solenoid "D" Control Circuit High |
| P0984 | Shift Solenoid "E" Control Circuit Range/Performance |
| P0985 | Shift Solenoid "E" Control Circuit Low |
| P0986 | Shift Solenoid "E" Control Circuit High |
| P0987 | Transmission Fluid Pressure Sensor/Switch "E" Circuit |
| P0988 | Transmission Fluid Pressure Sensor/Switch "E" Circuit Range/Performance |
| P0989 | Transmission Fluid Pressure Sensor/Switch "E" Circuit Low |
| P0990 | Transmission Fluid Pressure Sensor/Switch "E" Circuit High |
| P0991 | Transmission Fluid Pressure Sensor/Switch "E" Circuit Intermittent |
| P0992 | Transmission Fluid Pressure Sensor/Switch "F" Circuit |
| P0993 | Transmission Fluid Pressure Sensor/Switch "F" Circuit Range/Performance |
| P0994 | Transmission Fluid Pressure Sensor/Switch "F" Circuit Low |
| P0995 | Transmission Fluid Pressure Sensor/Switch "F" Circuit High |
| P0996 | Transmission Fluid Pressure Sensor/Switch "F" Circuit Intermittent |
| P0997 | Shift Solenoid "F" Control Circuit Range/Performance |
| P0998 | Shift Solenoid "F" Control Circuit Low |
| P0999 | Shift Solenoid "F" Control Circuit High |
Read the codes from your own car
Plug an inexpensive Bluetooth LE or Wi-Fi OBD2 adapter into the port under the dashboard, and Brimly on your iPhone reads the stored, pending and permanent codes, explains each one offline and clears them once the fault is fixed. OBD diagnostics are part of Brimly Forever, a one-time purchase.
Requires iOS 18.1 or later. Free to download, with optional in-app purchases.