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Thread: Help with fault codes...

  
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    Help with fault codes...

    Hi, any help would be much appreciated.
    I am from Latvia, and i drive a 2001. 1.8. coupe
    I love the car, but recently it has begun to run badly...
    There are no warning lights on the dash but i did the pedal test and came up with:
    1130 Lack of HO2S switch - adaptive fuel at limit
    0170 Fuel trim malfunction (bank 1)
    0220 Throttle /Pedal Position sensor/Switch B Circuit Malfunction
    0120 Throttle Possition Sensor/Switch A circuit Malfunction
    1550 PSPS Out of self test range
    0304 Cylinder 4 Misfire Detected (scary )
    It looks bad, but i think that some codes could be caused by the same problem
    So has anyone had similar faults and how did you sort them?
    The only faults when driving are:
    1. The throttle isn't very responsive and i have cleaned the throttle body
    2. When fuel tank is getting empty(1/4 tank left) the car sort of lacks power and when I'm accelerating fast, the car tends to choke(feels as tho it would have run out of fuel) for a few seconds and then it feels OK again P.S not going to change the fuel pump, it costs a fortune.
    P.S.S How can i clear the fault codes? I want to se if the cylinder misfire will return, and i have recently changed the spark plugs.

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    there is an issue with resistors on this engine ECU which normally shows up as 2 codes that will keep returning no matter how often you clear them, the two codes are 0220 and 0304/0303. i would discoonect the battery overnight to clear the ECU then run the car and see what codes come back. post the results back here for more help

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    Interesting - does this resistor issue carry over to the Z18XE in the VectraB too? I keep getting the position sensor error too but it comes and goes.

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    yes it affects most 1.8 variants and was due to the placing of the ECU on the side of the inlet manifold (especially on the Astra). the heat causes issues with the solder and vibration on the unit upsets certain board componants

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    disconnected the battery overnight and all the fault codes still there
    so that means that i need to change the ECU to hopefully sort out two of the codes?
    just checked the price of an ECU on ebay, not a happy camper... P.S does the ECU control the air con system? if there is no climate control...

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    yes it does mate, before you definately condemn the ECU, i would get it tech 2 checked, this will cost around £70 and will confirm things for you before you part with big money

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    my air con doesn't work because of the ECU, so will definitely take it to an electrician... Thanks for the help, appreciate it
    I have another question, yesterday i noticed another fault
    when driving fast (110 km/h) or accelerating hard, the ESP light comes on and stays on and i noticed it trying to correct something, but there is no wheel-spin to correct.. actually I couldn't drive faster that 110 because of the stupid ESP.
    so turned the ignition on and off a couple of times and the light is gone and the ESP works like it should... but it comes back after a while could this also be because of the ECU??

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    highly possible as you have a number of fault code issues. let an auto sparky check it over, it would be good to get it hooked up to tech 2 or similar to study the live sensor(s) data as it happens. but my guess would be that it will probably need and ECU repair/reflash or replacement

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    Ok, thanks a lot, helped me out big time

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