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.
When Monitored
When monitored: Whenever the key is in the Run or Run/Start position.
When monitored: Whenever the key is in the Run/Start position.
When monitored: Ignition key is turned from off position to run position and/or ignition key is turned from crank position to run position.
When monitored: Continuously
When monitored: Whenever the engine is running.
When monitored: Continuously with key on.
When monitored: Ignition key is turned from off position to run position and/or ignition key is turned from crank position to run position.
When monitored: Whenever the engine is running.
When monitored: Whenever the engine is running.
When monitored: Whenever the engine is running.
When monitored: Whenever the key is on or the engine is running. Engine speed > 500 RPM
When monitored: In 1st, 2nd, or 3rd gear with engine speed above 1000 RPM shortly after a shift and every minute thereafter.
When monitored: If the transmission is slipping in any forward gear and the pressure switches are not indicating pressure, a loss of prime test is run.
When monitored: After a gear ratio error is stored.
When monitored: During an attempted shift into 1st gear.
When monitored: During Electronically Modulated Converter Clutch (EMCC)
When monitored: Ignition key is turned from off position to run position and/or ignition key is turned from crank position to run position, then every 10 seconds thereafter, or when a gear ratio or pressure switch error DTC is detected.
When monitored: Continuously when doing partial or full EMCC (PEMCC or FEMCC)
When monitored: The transmission gear ratio is monitored continuously while the transmission is in gear.
When monitored: Whenever the engine is running.
When monitored: Whenever the engine is running.
When monitored: At every Fully Electronically Modulated Converter Clutch (FEMCC) to Partial Electronically Modulated Converter Clutch (PEMCC) transition miles when A/C compressor clutch is being cycled.
When monitored: Whenever the engine is running.
When monitored: When PCM (transmission control module) initially powers-up.
When monitored: Continuously with key on.
When monitored: Continuously with key on.
When monitored: Continuously with engine running and Transmission Relay energized.
When monitored: Every 7 milliseconds with the engine running and no loss of prime DTC set.
When monitored: Every 7 milliseconds with the engine running and no loss of prime DTC set.
When monitored: Every 7 milliseconds with the engine running and no loss of prime DTC set.
When monitored: Every 7 milliseconds with the engine running and no loss of prime DTC set.
NO RELATED
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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.