Case IH Error Code TRANS 2055 — What It Means and How to Fix It

Applies to: Puma Series (115-240), Maxxum Series (110-150), Magnum Series with Full Powershift or CVT

STOP — Tractor may not move. Transmission has lost wheel speed data.

Try cycling the key. If the tractor still won't move, check the wheel speed sensor connector on the transmission housing.

CIH TRANS 2055Case IHManually verified

No Signal from Wheel Speed Sensor

The transmission controller is not receiving any signal from the wheel speed sensor. Without wheel speed data, the transmission cannot function correctly and will refuse to engage gears or move.

Repair difficulty

DIY — Basic tools

Repair time

20 min

Dealer cost

$200-500

What to check first

  1. 1

    Cycle the key — off for 60 seconds, restart. If the tractor moves normally, it was a momentary signal loss — monitor for recurrence.

  2. 2

    Locate the wheel speed sensor on the transmission output shaft area and check the connector — disconnect, inspect, reconnect.

  3. 3

    Check sensor wiring for damage where it runs near hot exhaust components or moving parts.

Likely causes

  1. 1

    Loose or corroded connector— Most likely

    DIY

    Most common cause. Clean and reconnect.

  2. 2

    Failed wheel speed sensor— Possible

    DIY

    Test resistance with multimeter (typically 800-1,200 ohms). 0 or infinite confirms failure.

  3. 3

    Wiring damage (oil contamination, chafing, heat)— Possible

    DIY

    Transmission area is hot and oily — wiring degrades faster here.

  4. 4

    Sensor air gap too large— Less common

    DIY

    If the sensor has backed out of its mounting hole, the gap may be too large for reliable signal.

Parts needed

Tools needed

  • Socket set
  • Multimeter
  • Feeler gauge (for air gap)

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Pro tip

This sensor is cheap insurance. Carry a spare during harvest. A $125 sensor can save you from being stranded in the field.

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