C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

code 1661 please help?

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Old Jul 26, 2006 | 02:21 AM
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SMAR1477
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Default code 1661 please help?

the "check engine" light come on and the only code is a 1661 code. says it is a manufactor code???? where do i start to figure out whats wrong?????????
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Old Jul 26, 2006 | 08:42 AM
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The only thing I can think of is a faulty PCM, or the SES control circuit is shorted to ground (circuit comes out of PCM connector 4 pin 9
brown wire with white tracer).

You could try cutting the wire close to the PCM. If the SES light goes out the PCM is at fault if the light stays on it's shorted to ground (PCM controls ground side of circuit).
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Old Jul 26, 2006 | 11:26 AM
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one day last week the light actually went off for a day then came back on. where is the pcm located at????? where is that wire you mentioned located at on the car???????????
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