Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Code 62, Gear Switch Error: Notes
The 2nd gear switch should be open in 2nd and 3rd gear. The ECM uses this signal to disengage TCC when downshifting.
- 1) "Scan" testers display switch status in different manners. Refer to manufacturer's operating manual to determine proper status display.
- 2) Determines whether the switch or signal circuit is open. The circuit can be checked for an open by measuring the voltage at the TCC connector. Reading should be about 12 volts.
- 3) Because the switches should be grounded in this step, disconnecting the TCC connector should cause the "Scan" tester to change status.
- 4) The switch status should change when the vehicle shifts into 2nd gear.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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