P0880 code meaning
TCM Power Input Signal
Powertrain system Generic code P08xx codes Check engine light
What P0880 means
The TCM power input codes watch the supply voltage of the gearbox module or of its solenoid supply. Without a proper supply all solenoids go dead and the gearbox falls back to its hydraulic emergency gear with maximum line pressure: a fixed gear, harsh engagement, no shifting. Ford's external gearbox modules check a window of 9 to 16 V; GM reports the same under P0562/P0563. P0880 is the general fault. Hyundai's 2017–19 six-speed automatics set it when the solenoid supply drops below 7 V or rises above 22 V: MIL on, limp mode in 4th gear. Hyundai's bulletin points to the valve body harness and the TCU fuses and expressly not to the gearbox.
P0880 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0880
- MIL on
- Limp mode in a fixed gear, no shifting
- Harsh engagement into D or R
Common causes of P0880
- Most likelyHarness or connector between module and valve body damaged or corroded
- PossibleTCU fuse or transmission relay faulty
- PossibleWeak battery, charging fault, poor ground
- Less likelyGearbox module faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Transmission control moduleTransmission relayBatteryModule wiring
What each part of P0880 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 8 | Area: transmission. |
| 80 | The exact fault in that area. |
What to do next
- Note P0880 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 P0880
What does P0880 mean?
P0880 means "TCM Power Input Signal". The TCM power input codes watch the supply voltage of the gearbox module or of its solenoid supply. It is a generic code, so it means the same on every make.
Is it safe to drive with P0880?
Drive gently and only to a workshop. With P0880 the car can go into limp mode (reduced power) to protect itself.
Will P0880 fail an emissions test?
Yes, it can. P0880 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 P0880 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P0880 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.