Solenoids are generally numbered by letters, so the shift solenoid E is actually the 5th solenoid in the transmission, and it could be responsible for any number of gears/actions. If your vehicle has a P0984 DTC, it means that the shift solenoid E is not performing according to the preprogrammed parameters.
How Serious is the Code?
A P0984 diagnostic trouble code basically means that one or more of the gears inside of your transmission is about to stop working. So yes, it is very serious.
Symptoms of a P0984 include:
- The transmission seems to slam into gear
- Transmission may not shift into gear
- Dirty transmission fluid
- Low transmission fluid
- Damaged connectors and/or wiring
- Bad shift solenoid
How to Diagnose the Code?
Shift solenoid are used to control the flow of pressurized transmission fluid, so the condition and level of the transmission fluid is extremely important to the operation of said solenoids. Therefore, when trying to diagnose a P0984 OBDII trouble code, the transmission fluid should be the first thing that is checked. The next thing that should be checked is the condition of the wiring and/or connectors along the transmission wiring harness. After that, the shift solenoid E itself will need to be checked.
What Repairs Will Fix P0984?
- Service the transmission
- Replace or repair damage wiring/connectors
- Replace shift solenoid
- P0985 – Shift Solenoid “E” Control Circuit Low
- P0986 – Shift Solenoid “E” Control Circuit High