Discussion:
code -93 help

machine worked fine then next day get code -93 only pops up when driving but lift/tilt/ss do not operate. pump doesnt kick on. i can manually pick the pump contactor to run but does not operate on its own. any help would be amazing!
  • Posted 27 Dec 2024 07:52
  • By Brandon_Kovacs
  • joined 5 Jun'23 - 2 messages
  • New York, United States
Showing items 1 - 1 of 1 results.
Brandon,

Status Code Description Memory Recall Circuit
-93 Power steering motor brushes are worn. No Traction and Pump
Symptom
Status code flashes on and off.
Possible Causes and Test Procedures
* Power steering motor brushes are worn.
A sensor has closed to battery positive.
Replace power steering motor brushes.
* P3 and/or P4 is shorted to battery positive.
Locate and repair short.
* A power steering motor brush wear sensor is shorted
or defective.
Locate and repair shorted sensor lead or replace
power steering motor brushes.
* Defective lift pump controller.
(SR transistor-controlled lift pump only.)
Replace lift pump controller.
* Defective sensor interface/contactor driver module.
(Contactor-controlled lift pump only.)
Replace sensor interface/contactor driver module.
NOTE: Status code 93 is only checked when a neutral
signal is present (open start switch or open forward
and reverse switches). The status code is then displayed when the controller is returned to the run mode.
Cause
This status code is displayed when the voltage
at terminal P3 and/or terminal P4 of the SR lift
pump controller or the sensor interface/contactor
driver module is at battery volts

Please verify model number. Serial number would help. Thanks.
  • Posted 30 Dec 2024 22:56
  • By Fishmech
  • joined 12 Jul'17 - 370 messages
  • Virginia, United States
The hard to do we do right away. The impossible just takes a little longer.

Post your Reply

Forkliftaction accepts no responsibility for forum content and requires forum participants to adhere to our rules of conduct. Click here for more information.

If you are having trouble using the Discussion Forums, please contact us for help.

UN Forklift FBR25NQC3
HANGZHOU, Zhejiang, China
New - Sale
Aichi RX07B
Yokohama, Japan
Used - Sale
Global Industry News
edition #1256 - 13 November 2025
Automation is a key theme in the stories we have in this week’s Forkliftaction News ... Continue reading
Fact of the week
In March 2002, identical twins in Finland died on the same day in similar accidents within hours of each other. A 70-year-old man was killed by a truck while cycling; hours later, his twin brother was killed by a truck on the same road, about a mile away, before the family had been informed of the first accident.
UN Forklift FBR25NQC3
HANGZHOU, Zhejiang, China
New - Sale
Aichi RX07B
Yokohama, Japan
Used - Sale

PREMIUM business

VETTER Industrie GmbH
The world's most comprehensive range of forks and the most intelligent sensor fork for more safety and efficiency.
Fact of the week
In March 2002, identical twins in Finland died on the same day in similar accidents within hours of each other. A 70-year-old man was killed by a truck while cycling; hours later, his twin brother was killed by a truck on the same road, about a mile away, before the family had been informed of the first accident.
MLA launches new electric forklift Houston, TX, United States
Latest job alerts …
Oxford Ct, United States
New York Staten Island, United States