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RX 400h AWD
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Section 188 (Engine Control System (2GR-FE))
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SFI System
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DTC P0604 Internal Control Module Random Access Memory (RAM) Error
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Typical Malfunction Thresholds
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Typical Malfunction Thresholds
WARNING:
This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
ECM RAM errors:
TYPICAL MALFUNCTION THRESHOLDS
RAM mirror check
Fail