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    twotom2's Avatar
    twotom2 Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Jul 26, 2010, 06:01 AM
    Check engine 2003 camry
    My shop can't associate the check engine light with any codes on the diagnostic machine.
    Any ideas?
    twotom2's Avatar
    twotom2 Posts: 3, Reputation: 1
    New Member
    		  
    #2

    Jul 26, 2010, 06:04 AM
    Check engine light 2003 camry doesn't give a code on diagnostics? Any ideas?
    Had it in shop and mechanic couldn't get a code from the diagnostics computer.. He shut off CEL but it came back on after about a mile or so of driving. Any ideas?
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #3

    Jul 26, 2010, 06:27 AM

    Likely a bad ECM. Look into getting a remanufactured ECM, with the same Toyota part number, after removing the old one.
    kitch428's Avatar
    kitch428 Posts: 1,440, Reputation: 152
    Ultra Member
    		  
    #4

    Jul 26, 2010, 07:04 AM

    Most likely a P0420 in the cat.
    CaptainRich's Avatar
    CaptainRich Posts: 4,492, Reputation: 537
    Cars & Trucks Expert
    		  
    #5

    Jul 26, 2010, 11:04 AM

    What does the scan tool data show for the downstream O2 sensors?
    If data is within normal parameters, you may need a replacement PCM. Please, let me know if you do.
    twotom2's Avatar
    twotom2 Posts: 3, Reputation: 1
    New Member
    		  
    #6

    Jul 26, 2010, 11:26 AM
    Quote Originally Posted by CaptainRich View Post
    What does the scan tool data show for the downstream O2 sensors?
    If data is within normal parameters, you may need a replacement PCM. Please, let me know if you do.
    I have to get this info from the shop... don't have my paperwork with me.
    Very good response... something to consider if readings are in acceptable limits
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