C10c3 ecu faulty ce inseamna

Yes, it is possible for the ECU to be bad even if it is still providing codes to the OBD2 scanner. The ECU is a complex electronic device and it is possible for one or more of its internal components to fail without affecting its ability to communicate with the OBD2 scanner. In your case, the fact that the codes went away after replacing the #35 fuse and the IAC motor suggests that those were the underlying problems causing the "crank but no start" condition. However, the fact that the car still won't start after those repairs indicates that there is another problem, and it is possible that the ECU is at fault. To be sure, you would need to take the car to a qualified mechanic and have them perform a more thorough diagnosis. The mechanic may be able to test the ECU to see if it is functioning properly. If the ECU is found to be bad, it will need to be replaced. Here are some other possible causes of the "crank but no start" condition in your Lexus IS300: Faulty fuel pump Faulty spark plugs Faulty ignition coil Faulty camshaft or crankshaft sensor Low compression in one or more cylinders Clogged fuel filter Restriction in the air intake system If the mechanic is unable to find any other problems, then the ECU may indeed be the culprit. However, it is important to rule out all other possibilities before replacing the ECU, as it can be a costly repair.

You replaced the O2 and plugs fine but P0300 is not a plug related problem. It is related to the the supply of ignition signal to the coils. If the misfire is gone just delete codes and see what happens. If CEL comes on again check ignition signal from ECU.

CAN bus link with EAT ECU Timed out - turns on CEL

This means the Data link between engine computer and tranny computer may not be talking to each other. Perhaps dirty cable connections, poor wire grounding, etc.

You should go to www.reliable-store.com they have got books on every vehicle and also how to service/repair it,
service/repair/owner's/maintenance manual with
parts info, fuse box, gear box, torque specs,coiling, wiring diagrams, electrical diagrams, fuse diagrams, error codes, etc everything
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You can't program it unless you have a factory scan tool , this is dealer only .

most ecu resets are best done with a fault scan tool

Hi! Assuming the ECU is faulty there are some options for you!
1. The problem can be identified and repaired by someone who knows how to do so
2. Sometimes the previous option is more expensive than buying a new ECU to replace the faulty one. Even a used or refurbished one will do the job!

However, before deciding to replace the ECU you need to make sure that it is the ECU that is faulty! This can be easily verified by connecting it to a "computer" which will tell you if the ECU is faulty!

If you need more assistance please report back! Good luck!

This Diagnostic Trouble Code (DTC) is output when the Engine Control Module (ECM) detects errors in communication between the Transponder Key Electronic Control Unit (ECU) assembly and the ECM, or in the communication lines. This DTC is also output when an engine start is attempted while the ECU communication ID between the transponder key ECU assembly and the ECM is different.
Possible causes Faulty Key Faulty transponder key amplifier Faulty Transponder Key Electronic Control Unit (ECU) Transponder key amplifier wire harness Faulty Engine Control Module (ECM)

There are many conditions when CE comes... Try to find someone with necessary hardware (ecu scanner) to clarify error type.

actuator problems and ecu,,,,,,check first the