Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Automatic Transmission DTCS
/T Clutch Pressure Control Solenoid Valve A Stuck OFF P0747 (76) A/T Clutch Pressure Control Solenoid Valve A Stuck ON P0751 (70) Shift Solenoid Valve A Stuck OFF P0752 (70) Shift Solenoid Valve A Stuck ON P0756 (71) Shift Solenoid Valve B Stuck OFF P0757 (71) Shift Solenoid Valve B Stuck ON P0761 (72) Shift Solenoid Valve C Stuck OFF P0762 (72) Shift Solenoid Valve C Stuck ON P0776 (77) A/T Clutch Pressure Control Solenoid Valve B Stuck OFF P0777 (77) A/T Clutch Pressure Control Solenoid Valve B Stuck ON P0796 (78) A/T Clutch Pressure Control Solenoid Valve C Stuck OFF P0797 (78) A/T Clutch Pressure Control Solenoid Valve C Stuck ON P0812 (65) Open in Transmission Range Switch ATPR Switch Circuit P0842 (25) Short in Transmission Fluid Pressure Switch A (2nd Clutch) Circuit, or Transmission Fluid Pressure Switch A (2nd Clutch) Stuck ON P0843 (25) Open in Transmission Fluid Pressure Switch A (2nd Clutch) Circuit, or Transmission Fluid Pressure Switch A (2nd Clutch) Stuck OFF P0847 (26) Short in Transmission Fluid Pressure Switch B (3rd Clutch) Circuit, or Transmission Fluid Pressure Switch B (3rd Clutch) Stuck ON P0848 (26) Open in Transmission Fluid Pressure Switch B (3rd Clutch) Circuit, or Transmission Fluid Pressure Switch B (3rd Clutch) Stuck OFF P084C (179) Short in Line Pressure Switch Circuit, or Line Pressure Switch Stuck ON P0872 (27) Short in Transmission Fluid Pressure Switch C (4th Clutch) Circuit, or Transmission Fluid Pressure Switch C (4th Clutch) Stuck ON P0873 (27) Open in Transmission Fluid Pressure Switch C (4th Clutch) Circuit, or Transmission Fluid Pressure Switch C (4th Clutch) Stuck OFF P0877 (175) Short in Transmission Fluid Pressure Switch D (5th Clutch) Circuit, or Transmission Fluid Pressure Switch D (5th Clutch) Stuck ON P0878 (175) Open in Transmission Fluid Pressure Switch D (5th Clutch) Circuit, or Transmission Fluid Pressure Switch D (5th Clutch) Stuck OFF P0962 (16) Problem in A/T Clutch Pressure Control Solenoid Valve A Circuit P0963 (16) Problem in A/T Clutch Pressure Control Solenoid Valve A P0966 (23) Problem in A/T Clutch Pressure Control Solenoid Valve B Circuit P0967 (23) Problem in A/T Clutch Pressure Control Solenoid Valve B P0970 (29) Problem in A/T Clutch Pressure Control Solenoid Valve C Circuit P0971 (29) Problem in A/T Clutch Pressure Control Solenoid Valve C P0973 (7) Short in Shift Solenoid Valve A Circuit P0974 (7) Open in Shift Solenoid Valve A Circuit P0976 (8) Short in Shift Solenoid Valve B Circuit P0977 (8) Open in Shift Solenoid Valve B Circuit P0979 (22) Short in Shift Solenoid Valve C Circuit P0980 (22) Open in Shift Solenoid Valve C Circuit P0989 (176) Short in Transmission Fluid Pressure Switch E (6th Clutch) Circuit, or Transmission Fluid Pressure Switch E (6th Clutch) Stuck ON P0990 (176) Open in Transmission Fluid Pressure Switch E (6th Clutch) Circuit, or Transmission Fluid Pressure Switch E (6th Clutch) Stuck OFF P16C0 (-) PCM A/T Control System Incomplete Update P1717 (62) Open in Transmission Range Switch ATPRVS Switch Circuit P177A (190) Line Pressure Solenoid Valve A Stuck OFF, or Line Pressure Switch Stuck OFF P2714 (79) A/T Clutch Pressure Control Solenoid Valve D Stuck OFF P2720 (66) Problem in A/T Clutch Pressure Control Solenoid Valve D Circuit P2721 (66) Problem in A/T Clutch Pressure Control Solenoid Valve D P2821 (69) Line Pressure Solenoid Valve A Stuck ON P2826 (67) Short in Line Pressure Solenoid Valve A Circuit P2827 (67) Open in Line Pressure Solenoid Valve A Circuit U0029 (107) F-CAN Communication Circuit Error (F-CAN Bus OFF) U0104 (107) Lost Communication with Adaptive Cruise Control (ACC) Unit-PCM U0122 (107) F-CAN Malfunction (PCM Lost Communication with VSA Modulator-Control Unit) U0155 (107) F-CAN Malfunction (PCM Lost Communication with Gauge Control Module) (1) The DTC in parentheses is the flash code the D indicator indicates when the data link connector (DLC) is connected to the HDS, and in the SCS mode.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.