P0984 code meaning
Shift Solenoid E Control Circuit Range/Performance
Powertrain system Generic code P09xx codes Check engine light
What P0984 means
Range/performance fault in the drive circuit of shift solenoid E. Ford checks SSE with P0770, P0985 and P0986 only, GM's documented tables never reach letter E, and even Ferrari's DCT list, which reuses most of its neighbours, skips P0984. The one codegenau source is FCA: in recall S55 for the 9-speed front-drive transaxle it names P0984 together with P0975, P0978 and P0981. Under old TCM software, a range sensor harness with poor crimps and intermittent high resistance could set them; with new software the same fault shows as P0901, and these four codes then point to a separate transmission problem. Otherwise the code rests only on the CARB rule for transmission output checks. Low/high are P0985/P0986.
P0984 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0984
- Sudden neutral or loss of drive (FCA 9-speed)
- MIL or transmission warning on
- Limp mode
Common causes of P0984
- Most likelyRange sensor harness with weak crimps (FCA 9-speed recall)
- PossibleTCM software below the recall level
- PossibleInternal transmission fault when the code returns after the update
- Less likelyFaulty driver stage in the control module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Shift solenoid eWiring harnessTCM
What each part of P0984 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 9 | Area: transmission. |
| 84 | The exact fault in that area. |
What to do next
- Note P0984 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0984
What does P0984 mean?
P0984 means "Shift Solenoid E Control Circuit Range/Performance". Range/performance fault in the drive circuit of shift solenoid E. It is a generic code, so it means the same on every make.
Is it safe to drive with P0984?
Drive gently and only to a workshop. With P0984 the car can go into limp mode (reduced power) to protect itself.
Will P0984 fail an emissions test?
Yes, it can. P0984 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0984 to fix?
Difficulty: hard. A typical repair takes 0.5 to 5 hours of work. This is a job for a workshop.
Will P0984 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.