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Thread: P1694 fault code

  
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    P1694 fault code

    Hi,Ive just looked up this code here,which gives me:

    P1694 Turbo Charge Relief Circuit Malfunction

    Another member stuck into a tech machine for me(Thanks again mate!!),is this the solenoid that operates the EGR valve by any chance?

    Any help more than welcome,thanks guys!!

    The tech printout however says P1694 Glow duration present -004 control indicator circuit open

    Got this fault from another site:

    P1694 Glow Time Telltale Circuit High Input C-25
    P1694 Glow Time Telltale Circuit Open C-25

    Id say the lower fault/code looks to be more likely.

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    You don't state what engine you have or the fault/s encountered, however the 1997-2008 Auto data for P1694 = Glow plug warning lamp - circuit malfunction.

    Probable cause = wiring, glow plug warning lamp.

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    OOps sorry thought I'd put that in!

    Its a 1.7td astra mk4 98 reg.

    The only thing that I really notice is that the coil light doesn't always come on,has no problems starting at all though,eng management light does come on and off randomly which I had thought was the EGR valve acting up again.

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    The coil light will only illuminate if the engine block is cold enough, (temp sensor/engine coolant sensor) not to be confused with outside temp sensor which is a different circuit. It is ok for the emmissions light to come on now and again, so long as it does not stay on all of the time.

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    Bought and fitted a new glo plug relay,damned light still comes on

    Im guessing that its possibly gonna be a wiring problem then?

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    Looks like a faulty wire may be the case. If the engine is running ok don't worry too much about it, you could try to find the problem but may be very time consuming.

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    Im wondering if the wiring has been rubbed away under the battery box,looks like the only area that could cause a problem to me from taking a quick look.

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    Rubbing and chafing is quite often the culprate, pay particular attention to any areas where wires pass near to or through sharp objects. i.e metal clips. Also look for wires that are pulled too tight. Check the connections to the ECU, clean them up with switch cleaner, make sure the battery is disconnected first. If you suspect the part of the loom mentioned you will have to unrap it and check the wires within.

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