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2000 AUDI A6
2.7L Turbo V6•AWD•AUTOMATIC•gas•APB•turbo
4 active safety recalls on this vehicle — view recalls
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Repairs0Labor504Torque2222Fluid9DTC1653Battery1Maintenance0Recalls4
P0882high severityPowertrain

TCM Power Input Signal Low

on 2000 Audi A6 2.7L Turbo V6 · AWD

What this code means

The TCM is reading a power input voltage that is too low. This often indicates a supply or ground fault to the module.

Symptoms

  • Transmission stuck in a single gear
  • Warning light illuminated
  • No or delayed shifts

Common causes

  • High resistance in power feed wiring
  • Corroded ground or power connector
  • Blown fuse or bad relay
  • Faulty transmission control module

Diagnostic steps

  1. Measure voltage at TCM power input
  2. Check fuses and relays feeding TCM
  3. Inspect grounds and power connectors
  4. Repair wiring showing voltage drop
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