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/Flash Code Description P0715/15 Defective Mainshaft Speed Sensor P0720/9 Defective Countershaft Speed Sensor P0730/41 Defective Shift Control System P0740/40 Defective Lock-Up Control System P0753/7 Defective Shift Control Solenoid "A" P0758/8 Defective Shift Control Solenoid "B" P1705/5 Defective A/T Gear Position Switch P1706/6 Defective A/T Gear Position Switch P1753/1 Defective Lock-Up Control Solenoid "A" P1758/2 Defective Lock-Up Control Solenoid "B" P1768/16 Defective Linear Solenoid P1791/4 Defective Vehicle Speed Sensor
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.