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1998 TOYOTA TACOMA
2.7L I4•RWD•AUTOMATIC•gas
5 active safety recalls on this vehicle — view recalls
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Repairs0Labor1047Torque1633Fluid17DTC3334Battery2Maintenance0Recalls5
P0884moderate severityPowertrain

TCM Power Input Signal Intermittent

on 1998 Toyota Tacoma 2.7L I4 · RWD

What this code means

The TCM power input signal is cutting in and out intermittently. This is usually a loose connection or chafed wire.

Symptoms

  • Intermittent shift faults
  • Warning light comes and goes
  • Momentary loss of gear selection

Common causes

  • Loose or corroded TCM connector
  • Chafed or broken wire
  • Poor ground connection
  • Faulty transmission control module

Diagnostic steps

  1. Wiggle-test TCM harness while monitoring voltage
  2. Inspect and clean connectors
  3. Check grounds for integrity
  4. Repair intermittent wiring faults
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