#ECU
4 posts in Car Diagnostics blog about "ECU" — OBD-II diagnostics, DTC codes, repair. ← All posts
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Coding, programming and flashing: three words people use wrongly
Three different operations with three different risk levels and three different price tags. Confusing them is how people agree to work they did not need.
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P0600 to P0605: control module memory and internal faults
The module is reporting a problem with itself. Before believing it, rule out the two things that make a healthy ECU report internal faults: voltage and connections.
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P0606: PCM processor fault — when the computer accuses itself
P0606 is the ECU reporting its own internal self-test failure. Before condemning a control module, rule out the power supply and grounds that produce identical symptoms for a fraction of the price.
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CAN Bus for car owners: how the "nervous system" of a car works and why it matters for diagnostics
Plain-English CAN Bus: how 60+ ECUs communicate over 2 wires, what ISO 15765-4 and ISO-TP are, high-speed vs low-speed CAN, and why "lost communication with ECU" (U0100+) is critical.