The P0603: Internal Control Module Keep Alive Memory (KAM) Error refers to a problem where the vehicle’s Keep Alive Memory (KAM) in the control module has failed or contains corrupted data. This could be caused by a faulty KAM, corrupted memory, or a malfunctioning control module, potentially leading to performance issues or loss of stored data.
P0603 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P0603: Internal Control Module Keep Alive Memory (KAM) Error |
| Is it serious? | Yes, it can result in loss of critical memory data and cause performance issues. |
| Possible causes | – Faulty KAM – Corrupted data – Faulty control module |
| How to diagnose? | – Test KAM – Reprogram or replace control module |
P0603 Meaning
The P0603 code indicates that the vehicle’s control module has encountered an issue with the Keep Alive Memory (KAM). The KAM stores essential data like system settings and learned values even when the vehicle is turned off. If this memory is faulty or the data becomes corrupted, the control module may lose stored information, leading to drivability issues.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for other related codes that could provide additional insight into the control module’s health. | OBD-II Scanner |
| Test the KAM | Use a diagnostic tool to test the KAM for data integrity and retention to verify if the memory is functioning correctly. | Diagnostic Tool |
| Inspect Control Module | Inspect the control module for any signs of physical damage, corrosion, or electrical issues that could be affecting KAM performance. | Flashlight, Multimeter |
| Reprogram or Replace the Control Module | If the KAM is faulty and the control module cannot store or retain data, reprogram or replace the control module as needed. | Diagnostic Tool, Replacement Module |
| Clear the Code and Test | After repairs or reprogramming, clear the code using an OBD-II scanner and test the vehicle to ensure the issue is resolved. | OBD-II Scanner, Vehicle Manual |
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I test OBD-II scanners and make DIY Engine diagnostics guides to help you solve your car problems without having to depend on the mechanic. A lot of them will try to scam you or are just no help at all. About Juraj Lukacko