Question about 1994 Jaguar XJ6

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  • mightburs Dec 22, 2008

    I have a snap on same one I use on other jags merc bmw's and volvo's it just doesn't dedect any faults but the light is consistantly on?????

  • mightburs Mar 16, 2009

    Thanks, I'll try it again. I thought last time I disconnected the battery the light still came on immediatery. It's almost like when you turn the key on and all the lights go into test mode untill you crank that the check engine light stays stuck in test mode. Does this make any sense?

  • Anonymous Apr 19, 2009

    I'm currently having the same issue in my 1989 Honda CRX. I checked for codes and there are none. However, when I start the car the check light comes on within 5 seconds. Again, this only happens when the car is running. It's becoming really frustrating because there are no codes to show for the malfunction. Once the light comes on, it stays on until the car is shut down and restarted again. Bummer!

  • Marvin
    Marvin May 11, 2010

    u need to take this to a shop, u have a hard fault in the system, this can be a shorted sensor or a defective ECM (electronic control unit)

  • Marvin
    Marvin May 11, 2010

    Are U sure the scanner has the right testing protocol for your car? take it to a shop that has better test gear with live data capabilities



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I had this issue with a 95 once, (cant read the code but light stays on) I reset the code and about a week later the code came back on and I was able to read it.

Posted on Mar 11, 2009


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Service engine soon light is on, car running fine and smooth i already checked the Gas filling cap can you please help me in this. I tried to check the error code manually which is provided...

hav it scanned at a partsplace-but dont change any item till u git a data stream run--codes are general and can be secondary to the issue

Dec 30, 2011 | 2000 Nissan Sentra

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Engin light stays on

The ECM has detected a fault in one or more of its systems. Go here,
and it will explain what to do to extract any codes that are stored.
Come back here with the code(s) and I can try and help further.

Oct 11, 2011 | 1993 Honda Accord

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2004 chevy silverado crewcab 4x4 110k, recent 100k service check engine light came on - checked gas cap, not problem used stp gas treatments, light went out, rough idle continues loud clatter from...

just depends on what work was done and what was replaced last service

clatter and loss of power etc
could be timing out . a spark or fuel delivery issue

to clear the codes
undo the battery terminals ...count ten reconnect

if engine light stays on
there will be fault codes to be read from the ECU

Apr 29, 2017 | 2004 Chevrolet Silverado 1500 Crew Cab

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Need to find obd in 1990 honda accord

TROUBLE CODES System Diagnosis READING CODES When the "Check Engine'' warning light on the dashboard comes on and stays on, it indicates a problem in the fuel injection/emissions system. Check the ECU for fault codes. On certain models, some codes will not trigger the check engine light; if driveability has suffered, check for stored fault codes. The most common error when using fault codes is to assume the indicated component has failed rather than checking the entire circuit. The presence of a trouble code means simply that the electrical circuit for the named component is not functioning properly. For example, a code for the oxygen sensor circuit does not automatically mean the oxygen sensor has failed. A wire terminal may simply be loose or corroded at the connector. When using diagnostic or fault codes, always remember that the entire circuit including the component must be checked carefully. On 1990-95 Accord (except V-6) and 1992-95 Prelude, the codes are read from the check engine light after the two-wire service connector has been jumpered. On Accords, the service connector is under the dash on the passenger side. On Preludes, it is located behind the center console. Codes 1 through 9 are indicated by a series of short flashes; two-digit codes use a long flash for the first digit followed by the appropriate number of short flashes. For example, Code 14 would be indicated by 1 long flash followed by 4 short flashes. Codes are separated by a pause between displays. Multiple codes are transmitted in an alternating pattern. For example, a code 3 and 14 would be displayed as 3 short flashes (for Code 3) followed by the separator pause, then 1 long flash and 4 short flashes (for Code 14). Fig. 7: Fault codes are read from the check engine light on most late-model vehicles 86804048.gif
Fig. 8: On Accords, the service connector is located under the dash on the passenger side 86804049.gif
Fig. 9: The service connector on Preludes is located behind the center console 86804050.gif
  1. Use a jumper wire to connect the two terminals of the service connector together.
  2. Turn the ignition switch ON; the check engine light will display any stored codes by rhythmic flashing. NOTE: In the event that a code is encountered which is not on the chart, re-count the number of flashes. If the code is truly wrong, it will be necessary to swap the ECU for a known-good unit and recheck. Since this can be expensive, you may wish to bring the car to a reputable repair facility if no other cause of the failure can be found. This may save you the expense of purchasing an unnecessary part.
  3. If no codes are displayed but a driveablity problem exits, testing of the system individual components is necessary to find the problem. If codes are displayed, follow the appropriate troubleshooting chart in this section. Fig. 10: Fault code chart for 1990-93 Accords 86804051.gif
    Fig. 11: Fault code chart for 1994-95 Accords (four cylinder) 86804052.gif
    Fig. 12: Fault code chart for 1992-95 Preludes 86804053.gif

Dec 14, 2010 | 1990 Honda Accord

1 Answer

Check engine light stays on. changed oxygen sensor, pcv valve, coolant sensor, switched out PROM chip, and cannot get a code to blink. replaced all hoses coming off carb. smog pump and egr valve been...

what you could start with is checking to see what trouble codes are being logged for this vehicle...if the engine light stays on, it means the ecu is registering a the means of a trouble the trouble code doesnt tell you how to fix it, but it does give you the direction to go down...judst wondering if you have tried to obtain the trouble codes

Aug 26, 2010 | 1981 Chevrolet Corvette

1 Answer

95 Jaguar XJ6 will not start and No codes present?

During cranking @crk sensor u should see up to 1 ac volt. Also if cam position sensor is @ fault u may not get a code, internal fault. Cam sensors are not availible,but rebuild kit is availible. The engine has to be set to top dead center aligning mark on crank pulley & tab aswell as mark on cam sensor itself.

May 28, 2009 | 1995 Jaguar XJ6

1 Answer

How's YOUR oil pressure behave? ('95 XJ6)

get the oil pressure checked with a master gauge at a garage if ok will be oil gauge sender unit at fault if low with master gauge check oil pressure relief valve on filter housing i assume you have checked oil level

May 17, 2009 | 1986 Jaguar XJ6

2 Answers

Engine light is still on after we have replaced numerous parts

The engine light is on, Have u checked for fault codes? To check codes, pull back carpet on passenger side of car to expose ECU (electronic control unit) at 'foot' location on that side. There is a small LED display at the top of the unit, turn the key on (not running) and check for flashes, u must count the flashes to determine what codes are stored in the computer. Short flashes are for codes 1-9, two digit codes use long flashes for the 1st #, followed by short for the 2nd. There is a pause between codes, so there may be more than one. Check and let me know what u find.

Nov 19, 2008 | 1990 Honda Civic

1 Answer

Auto transmission

I believe this is a warning of a transmission problem (flashing S4 light), and u should have it checked by a good trans. shop or dealer. When The engine light comes on and stays on,(does it only go on when the S4 light flashes?)it is a warning of a problem (fuel injection/emissions system), which u can check by doing the following: There is a Electronic Control Unit (ECU), located under the carpet on the passenger (front) side near where your feet would be. There is an LED display on the ECU, the display is a small circle, I believe located at the top center of the ECU. When u get the ECU exposed(by pulling back the carpet), turn the key on, and observe the LED. If any codes were stored regarding a problem, the LED will flash. Count the flashes, Codes 1 thru 9 are a series of short flashes, two digit codes use a long flash for the 1st digit, and a short flash for the 2nd digit. Codes are separted by a pause between displays. If u have multiple codes , they are transmitted in a alternating pattern. Time and space make it hassle to list all codes ( there are 19 for the 91 Prelude), so if u want to go ahead and check the codes, let me know what they are , and I'll tell u what they mean. Good Luck! countrycurt0

Sep 05, 2008 | 1991 Honda Prelude

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