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.
Automatic Transmission DTCS
Retrieval of some diagnostic codes may require the use of special OEM tester or flash method using instrument cluster indicator. For procedures/testing of codes not shown below, refer to appropriate system article. AUTOMATIC TRANSMISSION DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION DTC Description P0715/15: Transaxle Jerks Hard When Shifting P0720/9 Lock-Up Clutch Does Not Engage P0725/11 Lock-Up Clutch Does Not Engage P0730 Fails To Shift, Stuck In 1st Or 4th Gears P0740 Lock-Up Clutch Does Not Engage Or Remains Engaged, Unstable Engine Idle P0753/7 Remains In 4th Gear, Fails To Shift Other Than 1st-4th, 2nd-4th, Or 2nd-3rd Gears P0758/8 Remains In 1st Or 4th Gear P1705/5 Lock-Up Clutch Does Not Engage, Fails To Shift Other Than 2nd-4th Gears P1706/6 Lock-Up Clutch Does Not Engage, Lock-Up Clutch Engages & Disengages, Fails To Shift Other Than 2nd-4th Gears P1753/1 Lock-Up Clutch Does Not Engage Or Remains Engaged, Unstable Engine Idle P1758/2 Lock-Up Clutch Does Not Engage P1786/14 Transaxle Jerks Hard When Shifting P1790/3 Lock-Up Clutch Does Not Engage P1791/4 Lock-Up Clutch Does Not Engage P1792/10 Lock-Up Clutch Does Not Engage P1794/13 No Specific Symptoms
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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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