# 2002 GEM E825 - Code 90 - Turtle Mode
**URL:** https://community.electricforum.com/t/2002-gem-e825-code-90-turtle-mode/16417
**Category:** Uncategorized
**Created:** [June 25, 2019, 11:29pm UTC](https://community.electricforum.com/t/2002-gem-e825-code-90-turtle-mode/16417 "2019-06-25T23:29:12Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@elcrawdad](https://community.electricforum.com/u/elcrawdad)
#### Post date: [June 25, 2019, 11:29pm UTC](https://community.electricforum.com/t/2002-gem-e825-code-90-turtle-mode/16417/1 "2019-06-25T23:29:12Z")
Hello,
I recently purchased a 2002 Gem E4 that was not functioning at all. I replaced all six of the batteries, replaced the charger(ride 4 fun) and replaced the T1 controller with a rebuilt T2 controller. When driving the Gem car it will immediately go into Turtle mode and flash code -90. Code -90 indicates that terminal 1 is shorted to ground, input sensor error and to check the motor controller. The rebuilt T2 controller has the jumper wire installed and I have tried on terminal 23 to terminal 1, Terminal 21 to terminal 1, terminal 2 to terminal 23 and terminal 2 to terminal 21 as there were multiple professionals who said to hook up the jumper wire up those different ways. None of these connections solved the turtle mode/code -90 issue. The electric motor seems to be working fine but I am wondering if it is causing the problem. The exterior casing is pretty rusted. I Used an ohm meter and there does not appear a short but two of the ohm readings are fairly different from one another. I drove the cart in turtle mode for 2 miles and the motor felt pretty warm but not scalding hot. Any recommendations or advice would be greatly appreciated. Thank you
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### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [June 26, 2019, 12:15am UTC](https://community.electricforum.com/t/2002-gem-e825-code-90-turtle-mode/16417/2 "2019-06-26T00:15:26Z")
Do you have a link to the error codes? They are new to me.
Not a good idea to randomly jumper terminals.