Cause
Low transmission line pressure
The hydraulic pressure applying every clutch, genuinely below specification. Slip becomes heat, and heat is what turns a fluid-and-filter job into a rebuild — so the miles driven after this appears matter more than almost anything else in the diagnosis.
Typically specialist work. Needs equipment or training most home workshops do not have.
Some of these codes mean you should stop driving
1 of the 23 codes this can cause indicate a fault where continuing to drive risks damage or is unsafe. Which one you have matters more than the cause does — read the code's own page before deciding.
Codes this can cause (23)
Codes where this is a likely explanation first, rather than merely a possible one.
- P0730 Incorrect Gear Ratio Likely for this code High
- P0731 Gear 1 Incorrect Ratio Likely for this code High
- P0735 Gear 5 Incorrect Ratio Likely for this code High
- P0784 4-5 Shift Malfunction Likely for this code High
- P0829 5-6 Shift Malfunction Likely for this code High
- P0894 Transmission Component Slipping Likely for this code Stop driving High
- P0896 Shift Time Too Long Likely for this code High
- P0729 Gear 6 Incorrect Ratio High
- P0732 Gear 2 Incorrect Ratio High
- P0736 Reverse Incorrect Ratio High
- P0741 Torque Converter Clutch Circuit Performance/Stuck Off Moderate
- P0746 Pressure Control Solenoid A Performance or Stuck Off High
- P0751 Shift Solenoid A Performance or Stuck Off High
- P0756 Shift Solenoid B Performance or Stuck Off High
- P0761 Shift Solenoid C Performance or Stuck Off High
- P0766 Shift Solenoid D Performance or Stuck Off High
- P0771 Shift Solenoid E Performance or Stuck Off High
- P0776 Pressure Control Solenoid B Performance or Stuck Off High
- P0780 Shift Error High
- P0781 1-2 Shift Malfunction High
- P0782 2-3 Shift Malfunction High
- P0796 Pressure Control Solenoid C Performance or Stuck Off High
- P0B0C Electric/Auxiliary Transmission Fluid Pump A Hydraulic Leakage High
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
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