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How to Check Trouble Codes - Kohler EFI

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How to Check Trouble Codes- Kohler EFI using software diagnostic tool

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1. What powers up the Bluetooth diagnostic device?
A separate 9V battery Turning the ignition key to the 'on' position Starting the engine and running it at high RPM Plugging the phone into the device via USB
2. How do you visually confirm the diagnostic device is receiving power?
A green light on the engine's dashboard An LED light on the Bluetooth device itself The phone vibrates three times The fuel injectors make a clicking sound
3. If the app does not automatically identify your engine, what is the required step?
Manually select the specific engine model from a list Restart the phone and reinstall the app Type in the engine's serial number manually Unplug the battery for ten seconds
4. What is indicated by a "Current" trouble code?
A fault that happened in the past but is now fixed An active problem that the ECU currently detects A problem that only happens when the engine is hot A code that was generated during the manufacturing process
5. In the video, what happened to the O2 sensor code once the sensor was plugged back in?
It disappeared completely from the screen It changed from a Current code to a Historic code It triggered a secondary fuel pump error It turned red to indicate a critical failure
6. Does a trouble code for a specific component always mean that component is broken?
Yes, the computer is 100% accurate No, it points to a circuit area that requires further testing
7. What extra resource is often built into these diagnostic programs to help with repairs?
A link to a local dealership map Component-specific wiring diagrams and testing procedures A chat window to talk to other mechanics A digital copy of the owner's manual
8. What are "learn codes" (like 0174 or 0172) usually related to?
Battery voltage levels Fuel system adaptations and limits The hours since the last oil change Bluetooth signal interference
9. Why might a "Clear Code" button fail to permanently remove a code?
The app version is outdated The underlying physical problem has not been repaired The phone is too far away from the engine The engine oil is too low
10. What tool is used to navigate the diagnostic app in the video?
A specialized laptop with a serial cable A Bluetooth-enabled smartphone or tablet (iOS/Android) A handheld OBDII scanner from an auto parts store The engine's built-in LCD screen