logo elektroda
logo elektroda
X
logo elektroda

[Solved] Seat Leon 1.8 20V - Lambda Probe Fault: Replaced Sensor, Error Persists, Wiring & Voltage Checked

koles2233 23760 7
ADVERTISEMENT
Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #1 16445569
    koles2233
    Level 9  
    Hello,
    Recently I got a lambda probe fault (lambda probe heating circuit bank 1 sensor 1). Without thinking about it, I replaced the probe with a new one. But the error has not disappeared. It's still the same. I checked the wires running from the controller to the probe and it seems to be okay. The thickest cables running from the controller to the cube are 12V, with the engine running, it was slightly higher. I measured the resistance in the old probe on the white and gray wire because it would give them voltage running from the controller and the meter showed nothing. I also measured in the new probe I bought and the meter did not show anything. Here my question arises whether I received a faulty specimen or whether the voltage running from the controller is too large and burns the heater. Is it possible that the fuse is too big?
    Seat Leon 1.8 20V - Lambda Probe Fault: Replaced Sensor, Error Persists, Wiring & Voltage Checked
    Seat Leon 1.8 20V - Lambda Probe Fault: Replaced Sensor, Error Persists, Wiring & Voltage Checked
    Seat Leon 1.8 20V - Lambda Probe Fault: Replaced Sensor, Error Persists, Wiring & Voltage Checked
  • ADVERTISEMENT
  • #2 16445975
    piotrekwoj1
    Level 43  
    The heating cables are yellow and blue, not gray and white.
  • ADVERTISEMENT
  • #3 16446269
    koles2233
    Level 9  
    In this test there is no blue color, so which are the wires from the heater?
  • ADVERTISEMENT
  • #4 16446312
    grala1
    VAG group specialist
    You did not write what probe you have.
    The colleague gave a description for NTK (NGK) and you have Bosch LSU-4.
    For Bosch, the heater is gray (+), white (-).
    Gray has power after the ignition and the mass is given from the ECU, i.e. the ECU controls the power of the heater.
  • #5 16446511
    koles2233
    Level 9  
    Yes, I have a bosha and I have to understand that the maximum voltage on the probe is 12V and with this voltage nothing will happen to the heater?
  • ADVERTISEMENT
  • #6 16446513
    grala1
    VAG group specialist
    Nothing will happen to her.
    How much did the new probe cost?
    This probe in the original from Bosch is about PLN 500.
  • #7 16446605
    koles2233
    Level 9  
    I bought a new original boscha for about 350 zlotys at a discount. I have no idea what might be wrong. The only variant that suits me is that this probe is faulty. I checked the voltage in the plug and there is 12V and there is no resistance on the white-gray wires on the probe. Is there any other possible way to check this probe? Seat Leon 1.8 20V - Lambda Probe Fault: Replaced Sensor, Error Persists, Wiring & Voltage Checked


    The exchange helped. The new probe was faulty :)
  • #8 17053759
    koles2233
    Level 9  
    Replacing the probe helped :)

Topic summary

The discussion revolves around a lambda probe fault in a Seat Leon 1.8 20V, specifically regarding the heating circuit of bank 1 sensor 1. The user replaced the lambda probe with a new Bosch LSU-4 sensor, but the error persisted. They checked the wiring and confirmed a voltage of 12V at the probe connector, but no resistance was detected on the probe's wires. Responses clarified that the correct wiring colors for the Bosch probe are gray (+) and white (-), and that a voltage of 12V should not damage the heater. Ultimately, the user discovered that the new probe was faulty, leading to the resolution of the issue upon replacement.
Summary generated by the language model.
ADVERTISEMENT