P0603 - Powertrain Control Module Keep Alive Memory (KAM) Error
WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2004 Mercury Sable, 2004 Mercury Mountaineer, 2004 Mercury Monterey, 2004 Mercury Marauder, and 2004 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
P0603 - POWERTRAIN CONTROL MODULE KEEP ALIVE MEMORY (KAM) ERROR
| Description: | Indicates the PCM has experienced an internal memory fault. However, there are external items that can cause this DTC. | ||
| Possible Causes: |
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| Diagnostic Aids: | If KAPWR is interrupted to the PCM because of a battery or PCM disconnect, a DTC can be generated on the first power-up. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to QB: DTCs P0603 or P1633: Keep Alive Power STEP 1 | - | - |