The transmission control module power input signal tells the ECU that the TCM is able to power up. If there is a low voltage signal on this circuit, not only will the TCM not be able to function properly, a P0882 DTC will be set.
What Transmission Do I Have?
How Serious is the Code?
A P0882 diagnostic trouble code is actually pretty serious, because it means that the TCM may not receive enough power to function properly. If this is the case, expect a number of drivability issues that could impact the safety of your vehicle.
Symptoms
Symptoms of a P0882 include:
- Unusually harsh shifting
- Delayed gear changes
- Erratic transmission behavior
- Engine stalls
- Shift interlock does not work
- Malfunctioning speedometer
Causes
- Power relay failure for the ECU or TCM
- Blown or corroded fuse
- Bad fusible link
- Wiring or connector damage
- Faulty car battery
- Failing alternator
How to Diagnose the Code?
In order to diagnose a P0882 OBDII trouble code, the technician should start by checking the battery and alternator to make sure they are putting out the correct amount of voltage. After that, the wiring, connectors, fuses, fusible links, and power relays will all need to be checked.
What Transmission Do I Have?
What Repairs Will Fix P0882?
- Repair or replace damaged wiring/connectors
- Replace the power relay
- Replace the blown fuse(s)
- Replace the fusible link
Related Codes
- P0880 – TCM Power Input Signal
- P0881 – TCM Power Input Signal Range/Performance
- P0883 – TCM Power Input Signal High
- P0884 – TCM Power Input Signal Intermittent
