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01 RX300 only starts with code reader

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Old Jul 23, 2016 | 03:23 PM
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Default 01 RX300 only starts with code reader

I have been having hard starts, now no starts unless my code reader is plugged in. Cranks but no start without code reader, with it in, Ill get is started albeit a tad rough at first then after warm up, runs and idles perfectly. Sometimes check engine light is on with P1760, P1656,P1351 then others no codes at all. I checked all the ground under the hood but I am afraid this is pointing to an ECU. Any ideas on problem or best source for another ECU? Thanks so much!!!
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Old Jul 25, 2016 | 07:08 AM
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Have you had any water damage to the ecu area?

Salim
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Old Jul 26, 2016 | 06:46 PM
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See if the OP in this thread figured it out: https://www.clublexus.com/forums/rx-...won-t-run.html
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Old Oct 29, 2016 | 07:59 AM
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Bad ground. especially the big one behind upper intake.
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