Crankshaft Position sensor codes
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, Crankshaft Position sensor codes in Past Cadillac Vehicle Discussion; I have to first say, I love this site. As a female who loves to work on cars and especially ...
  1. #1
    JessDeville2's Avatar
    JessDeville2 is offline Cadillac Owners Member
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    Crankshaft Position sensor codes

    I have to first say, I love this site. As a female who loves to work on cars and especially my cadillacs this site has helped me out alot. So first of all, a week or so ago my SES light came on. I had it checked at auto zone and was told that the CKP B sensor and circuit codes were present. I changed both A and B sensor and the SES never went off. I did a manual code clearing through the dash board PCM, but it came back on. Now the car cranks about 5 times before it actually turns over, which it has never done before. I took it to a shop where they ran a relearn process on it, and nothing changed. grrrr!!! They scanned it again and seen there was a CAMshaft sensor code stored in the history so I went ahead and changed that as well. Reset the light, disconnected both + and - battery terminals, and light still comes on and it is still hard to start........the PCM is now only giving me a code P0385. I was told by a friend that all i need to do it change the CKP connector on sensor B and make sure to soder the new one. DOES THIS SOUND RIGHT TO ANYONE OR ANY SUGGESTIONS???? I did not have a relearn process done again after changing the CAMshaft sensor. The car runs great, purrrrrrs like a cadi should, It just dont want to crank up right away like it used to. HELP ME PLEASE!!!

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    Ranger's Avatar
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    Re: Crankshaft Position sensor codes

    Jesse

    First off there is no need to have your codes read. You can do it all through the DIC.

    When I changed my CKP sensors last year I never did any relearn. There should be no need to change the connectors either. IF they where very oily, maybe spray them down with Brakleen or electronic cleaner. That might be worth a try first.

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    JessDeville2's Avatar
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    Re: Crankshaft Position sensor codes

    Thank you so much, it has cost me more then I wanted. So do I need to take that sensor connector back off to spray it down, or just spray it while connected?

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    Submariner409's Avatar
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    Re: Crankshaft Position sensor codes

    Unfortunately (in this case) the idea of cleaning electrical connector pins is to have the plug/socket separated, spray each with electronics cleaner, and plug/unplug several times to wipe the contact areas clean. Some of these cars have also had the wiring itself burned by contact with an exhaust manifold.

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    Ranger's Avatar
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    Re: Crankshaft Position sensor codes

    To be perfectly honest, I don't hold much hope for cleaning the connector, but it can't hurt and may as well be ruled out.

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    JessDeville2's Avatar
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    Re: Crankshaft Position sensor codes

    Thank you all for your input. The code I am getting now is P0385 and P0386.....I reset the light yet again and these are the only ones coming up as current codes. The car is still hard to start and will not fire right up. I am down to 2 options, either take it in to do yet another relearn process, which didnt help the first time, or change the wiring connector on B sensor. I dont want to spend any more then I have to at this point. I just dont like the hard starts, it will eventually start wearing on my starter...UGH Other then the hard start and light remaining on, again, the car runs GREAT

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    Re: Crankshaft Position sensor codes

    Something is wrong with CKP B - either the sensor itself or the connector/wiring.

    The fault has set the ignition control systems to the "limp home" mode in which timing is set to a fixed (rather than dynamic change) value. That could quite possibly cause a hard start condition.

    http://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

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    Ranger's Avatar
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    Re: Crankshaft Position sensor codes

    Is it possible that the B sensor is not seated properly or maybe is bad? What brand sensor did you get?

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    JessDeville2's Avatar
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    Re: Crankshaft Position sensor codes

    It is a new CKP, but maybe the connector is bad I just dont know how to check the connector before I go and replace it

    ----------

    I got it from Auto Zone, I can't remember their brand. You might be right that it is not seated properly, but would it still run good if it wasn't in right?

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    Re: Crankshaft Position sensor codes

    If it is an Autozone Don'tLast part that's probably your problem. Anything from AZ is questionable. Personally, I'd replace them with an A/C Delco sensors.

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    Quote Originally Posted by JessDeville2 View Post
    It is a new CKP, but maybe the connector is bad I just dont know how to check the connector before I go and replace it

    ----------

    I got it from Auto Zone, I can't remember their brand. You might be right that it is not seated properly, but would it still run good if it wasn't in right?
    Deadzone, thats your problem there..

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    Re: Crankshaft Position sensor codes

    Thanks....I'll change it out with an AC delco....obviously sensor A works fine from auto zone. But good to know that fellow cadillac owners prefer AC delco

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    grammjr is offline Cadillac Owners Member
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    Quote Originally Posted by JessDeville2 View Post
    Thank you all for your input. The code I am getting now is P0385 and P0386.....I reset the light yet again and these are the only ones coming up as current codes. The car is still hard to start and will not fire right up. I am down to 2 options, either take it in to do yet another relearn process, which didnt help the first time, or change the wiring connector on B sensor. I dont want to spend any more then I have to at this point. I just dont like the hard starts, it will eventually start wearing on my starter...UGH Other then the hard start and light remaining on, again, the car runs GREAT
    Did you ever get this figured out?

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