Powertrain, generic · Transmission

P0882 TCM Power Input Signal Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

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. P0882 means the supply is too low: Ford sets it below 9 V, continuously and with MIL. Chrysler's RFE, RLE and TE automatics test it when the key goes to run: if the module reads less than 3 V at the transmission control relay outputs while commanding the relay on, the code sets and the solenoids stay dead.

Likely causes

Weak battery or alternator not charging
Transmission relay, fuse or fuse box module faulty (Chrysler)
Corroded ground or supply wire, connector at the module
Module faulty

Symptoms

  • MIL on
  • Limp mode in a fixed gear, no shifting
  • Torque converter clutch stays open

Repair estimate

DifficultyMediumDIY possible
Parts and labour€30–800
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

transmission control moduletransmission relaybatterymodule wiring

Related codes

P0880P0883P0884P0890P0562P0700

References: newtonnet.co.uk, fordservicecontent.com, roushcleantech.com, gearsmagazine.com.