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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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Repairs0Labor1040Torque1598Fluid17DTC3336Battery2Maintenance0Recalls5
P0784moderate severityPowertrain

4-5 Shift Malfunction

on 1998 Toyota Tacoma 2.7L I4 · RWD

What this code means

The transmission did not complete the shift from 4th to 5th gear properly. This is typically caused by a solenoid or hydraulic problem in the shift circuit.

Symptoms

  • No 4-5 upshift
  • Slipping in higher gears
  • Poor fuel economy

Common causes

  • Faulty shift solenoid
  • Low or contaminated transmission fluid
  • Worn valve body
  • Internal mechanical failure

Diagnostic steps

  1. Check fluid level and quality
  2. Retrieve all transmission trouble codes
  3. Test the shift solenoid circuit
  4. Inspect valve body for sticking valves
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Other Powertrain codes on this vehicle

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