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 - 3.1L (Exc. CALIF. "W" Body): Notes
2nd gear switch should be open in 2nd and 3rd gears. ECM uses this signal to disengage TCC when downshifting.
- Scan testers display switch status in different manners. Refer to manufacturer operating manual to determine proper status display. Because both switches should be in same state during this test, tester should display same status for both 2nd and 3rd gear switches.
- Determines whether switch or signal circuit is open. Circuit can be checked for an open by measuring voltage at TCC connector. Reading should be about 12 volts.
- Because switches should be grounded in this step, disconnecting TCC connector should cause scan tester to change status.
- Switch status should change when 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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