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o2 sensor

  1. O2 sensor heater circuit fault

    Car Audio / Electrical / Security / Diagnostic Rel
    Hello, I have a problem with my O2 sensor the fault code is: P0135 O2 sensor heater circuit low voltage I did change my O2 sensor, but the code is still there I don't know if I checked the good circuit, but i did sax 12 volt, with the ignition on in circuit and something like 4 Om on the O2...
  2. [Corsa Combo Van] Oh crap wrong sealant used

    Astra, Corsa, Zafira, Meriva, Adam, Agila, Combo
    Ok so have been doing a bit of cleaning on my Combo (Z14XEP) of the EGR and throttle body before moving on to testing and cleaning (where possible) sensors. Some time ago I was sold "ASK Uncured HI TEMP SILICONE" on the basis it is safe to use all around the engine, though I now know this is...
  3. [Astra Mk4/G] [98-04] Erratic idle and misfire when freeing

    Car Audio / Electrical / Security / Diagnostic Rel
    Hi, Im from South Africa and this has been an issue with he car for a couple of months after the new pistons went in September 2018. Car was fine until I stopped at a red light then the engin light would come on and the idleing would be erratic and then the car would not be as powerfull as it...
  4. [Astra Mk5/H] [04-09] Error P0135 even after new sensor

    Car Audio / Electrical / Security / Diagnostic Rel
    Hi, hopefully someone can help shed some light into diagnosing this reoccurring fault on my partners Astra H 1.6 twinport. We had the fuse 26 issue when the car was purchased a year ago and changed the thermostat housing and temperature sensor. Once this was done and new fuse fitted the codes...
  5. [Meriva A] [02-09] P0340 code and changed sensor but no luck!

    Car Audio / Electrical / Security / Diagnostic Rel
    Hi all, I've been carrying out plenty of work on my 2005 Meriva 1.4, and it's almost ready to send for its MOT but the dreaded check engine light has come on! Along with that is the amber car with the spanner symbol inside. I've used a code reader and its giving out the signals P0340 - cam...
  6. Post-cat O2 sensor and fuel trim

    Other Car/Van Related Technical Information Requir
    Hi! after a chat with a fellow friend, we couldn't come to a conclusion. Is the rear O2 sensor used by the ECU in any way to affect/control the fuel trim on Vauxhall cars? To my knowledge, the rear O2 sensor purpose is only to monitor cat efficiency. So does anybody know how is it with this on...
  7. [Meriva A] [02-09] O2 sensor

    Astra, Corsa, Zafira, Meriva, Adam, Agila, Combo
    Hi just a quick question, I’m changing the o2 sensor after doing pedal check to get code error . I know it’s a 22 m spanner to undo the nut and disconnect the connection. After changing will pedal and ignition reset sequence reset the engine management or do I need a code reader to reset it . Thanks
  8. [Corsa D] [06-14] Error Codes P0036, P0141, P0135, P0302

    Astra, Corsa, Zafira, Meriva, Adam, Agila, Combo
    Hello! I ran a test yesterday on my Corsa D SXi 1.2 16v and got these error codes back. The engine light has been on for a few weeks which I was told was my o2 lambda sensor but it initially didn't cause any noticable issues when driving. However, my car now has a juddery idle and lack of power...
  9. [Zafira B] [05---] Exhaust/O2 Lambda Sensor - is there a difference between pre and post cat?

    Astra, Corsa, Zafira, Meriva, Adam, Agila, Combo
    Hi All, Just a quick question. I'm going to change the exhaust on my 56 plate Zafira 1.8 petrol and before we got started today my cousin (who is helping me) suggested that I get a replacement sensor for the front pipe as when he's previously changed exhausts they have snapped due to rust. I...
  10. [Vectra C] [02-08] Strange Problems

    Cavalier, Calibra, Vectra, Signum, Sintra & Insign
    Hey all new here to first of all hello and thanks for having me. Just wanted to get a take on what is possibly happening with my car. My car is a Vectra estate 1.8 petrol on a 54 plate. Z18XE engine code. Done an oil change 3 days ago, used shell helix 5-30 Car was running fine till the...
  11. [Vectra B] [95-02] Lambda Sensor

    Cavalier, Calibra, Vectra, Signum, Sintra & Insign
    Hi, I have recently run an OBD II diagnosis on my Vectra as I had the car with spanner warning light come on. One of the codes I got was a P0140 - O2 sensor CKT no activity Bank 1 Sensor 2. Now, I have the Haynes manual for my car but after reading through it I'm still non the wiser as to the...
  12. [Corsa D] [06-14] Engine Management Light, O2 sensor codes, Crankshaft code.

    Astra, Corsa, Zafira, Meriva, Adam, Agila, Combo
    Hi guys, So - a while ago I had the engine management light come on, took it to mechanic, changed sensors, not long later light reappeared, took it back he tried again same thing etc. He advised a few things it could be but said that it was safe to drive for the time being. A few months later...