Question about 2001 Cadillac DeVille

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Po386 code still in computer but ses light is off. why is code still in computer

I had the crank sensors and connectors replaced,and the ses light is off but the code is still in the computer. does anyone know what the problem is?

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  • Bonnie Ya?ez
    Bonnie Ya?ez Feb 22, 2012

    does it have pd on the end of it? the computer will keep old data on record as post or past data to let you know that there was a code in the past.

  • roosevelt lewis Feb 22, 2012

    Unfortunately,the light came back on. the repair facility originally said I had an open short,then it was a connector problem, I agreed to allow them to replace my connectors,against my bettert judgement. however the problem is still the same. the ses light is still on and the code po386 is still in the computer. They've had my vehicle for an entire week. to no avail. I am taking the car back to the facility . any suggestions?

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I got the ses light with po386. Starting was getting longer. Changed crankshaft pos. sensor; for a few miles the code was off but then came back THE SAME po386 AFTER getting "SERVICE ELECTRICAL SYSTEM". Battery volts on dash indicator was 12.4,=lower than normal dash reading. Driving the car 5 miles got the voltage up & that electrical code went away.=maybe overuse of AC, etc. Harder starting continued though, now with a distinct initial mechanical METALLIC crunch like when you are turning the key with the engine still spinning (it was not). I had the battery checked by its vendor (who also reads codes) & they said fine & charging fine. Their battery testing has been pretty accurate, although :"service electrical" has been an early warning of a pending battery failure in the past.. The now metallic mechanical crunching of the initial starter cranking ----is that more likely failiure to sense ckt position IS the cause, OR could it actually be a failing starter ? ?

Posted on May 27, 2013

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  • Cadillac Master
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If the codes are not cleared from the computers memory they will remain indefinitely even though the check engine light is off. The fact the light is off means the problem has been repaired successfully. You can try disconnecting the battery or better yet use a code reader to clear the codes. Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!

Posted on Feb 22, 2012

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Posted on Jan 02, 2017

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SOURCE: po386

There are a few causes that can trip that code.

- Crankshaft position sensor harness is open or shorted
- Crankshaft position sensor circuit poor electrical connection
- Faulty crankshaft position sensor
- Signal plate may be damage
- Starter motor may be faulty
- Starting system circuit
- Dead or weak battery

Posted on Feb 06, 2012

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Po386


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Source:http://www.cadillacforums.com/forums/cadillac-seville-cadillac-eldorado-forum/208857-po386-code.html

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