How serious is the code?
If the ECU cannot communicate with the transmission to determine what is happening, several driving issues may occur, such as slipping, complete failure to shift gears, and engine stalling. Therefore, a P0898 diagnostic code is quite serious.
Symptoms
Symptoms of a P0898 include:
- Slipping
- Unusually harsh gear shifts
- Failure to shift gears
- Transmission overheating
- Engine stalling
Causes
- Damaged wiring or connectors
- TCM failure
- ECU programming issues
- ECU failure
How to diagnose the code?
Since OBDII P0898 is typically caused by electrical or software issues, the manufacturer’s TSB database should first be checked for known solutions and ECU software updates. Wiring and connectors along the circuit should also be inspected for signs of damage, such as frayed wires and corroded connectors. The CAN BUS system should also be checked.
What repairs will fix P0898?
- Repair or replace damaged wiring/connectors
- Replace the transmission control module
- Reprogram or replace the ECU