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VSC light comes on with error code PO603 for Lexus GS-300
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asked
May 2, 2018
by
Rohit trivedi
Error cod PO603 dealer is recommending engine carbon build up cleaning - $10,000
Vehicle:
2006 Lexus GS-300
lexus
code
p0603
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answered
May 5, 2018
by
Reynaldo
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13.4k
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P0603 Internal control module (keep alive memory)
Anytime the CK ENG LT comes on the VSC is turned off this is due to the vehicle not operating at manufacturer specification. As for P0603 this is for the ECM
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