In order to function, transmission control module needs power from the vehicle’s electrical system. To protect it from voltage irregularities, a number of fuses, relays, and fusible links are employed. If the ECU detects there is unusually high voltage within the power circuit, a P0883 DTC will be saved.
How Serious is the Code?
The P0883 diagnostic trouble code is actually very serious, because it indicates that the transmission control module does not have the right amount of voltage to operate. If this happens, you will experience a number of drivability problems that include harsh shifting and engine stalling.
Symptoms of a P0883 include:
- Harsh gear changes
- Erratic gear changes
- Delayed shifting
- Engine unexpectedly shifts off
- Shift interlock failure
- Malfunctioning speedometer
- Power relay for the ECU or TCM has failed
- Blown or corroded fuse
- The fusible link has blown
- Damaged wiring
- Corroded or broken connectors
How to Diagnose the Code?
In order to properly diagnose a P0883 OBDII trouble code, the troubleshooting procedure should start with a test of the car battery and alternator. If both are putting out the correct amount of voltage, then the wiring and connectors should be carefully examined for signs of damage and corrosion. After that, the fuses, fusible links and power relays should all be tested.
What Repairs Will Fix P0883?
- Repair or replace damaged wiring/connectors
- Replace the power relay
- Replace the blown fuse(s)
- Replace the fusible link
- P0880 – TCM Power Input Signal
- P0881 – TCM Power Input Signal Range/Performance
P0882 – TCM Power Input Signal Low
P0884 – TCM Power Input Signal Intermittent