The P0897 DTC gets triggered when the engine control unit/ECU detects a general problem with the transmission fluid. This should be caused by something as simple as a low fluid level, but it could also indicate a more serious problem with the pressure control system.
How Serious is the Code?
Although the P0897 diagnostic trouble code may not seem all that serious, it can actually be triggered by things like a failing solenoid, or transmission pump. So investigating the cause should be done sooner than later.
Symptoms of a P0897 include:
- Harsh shifts
- Transmission will not change gear
- Shuttering or shaking
- Transmission overheats
- Poor acceleration and/or fuel economy
- Low transmission fluid level
- Dirty transmission fluid/filter
- Failed solenoid(s)
- Blocked passages inside the transmission
- Failed pressure regulator
- Failed transmission pump
- TCM programming issue or failure
How to Diagnose the Code?
Obviously, the first thing that should be done when trying to diagnose a P0897 OBDII trouble code, is to check the condition and level of the transmission fluid. If it is dirty, it should be changed immediately and any transmission fluid leaks should also be repaired. The wiring and connectors along the transmission wiring harness may also need to be checked for signs of shorts and other damage. If no obvious problems are found, the transmission pump will need to be tested. An internal inspection of the solenoids and an pressure control system may also be needed.
What Repairs Will Fix P0897?
- Change transmission fluid
- Flush transmission
- Repair or replace damaged wiring/wiring harness
- Repair transmission fluid leaks
- Replace transmission pump
- Replace solenoid(s)
- Replace pressure regulator
- Repair or replace TCM
- P0710: Transmission Fluid Temperature Sensor Circuit
- P0711: Transmission Fluid Temperature
- P0729: Gear 6 Incorrect Ratio
- P0730: Incorrect Gear Ratio
- P0731: Gear 1 Incorrect Ratio
- P0732: Gear 2 Incorrect Ratio
- P0733: Gear 3 Incorrect Ratio
- P0734: Gear 4 Incorrect Ratio
- P0735: Gear 5 Incorrect Ratio
- P0736: Reverse Incorrect Ratio