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Lambda sensor's

pjwakefield

pjwakefield

New member
Hi , i am having problems with my precat lambda sensors as the engine management light keeps coming up, i have replaced bank 1-3 twice now first with an official one second with an aftermarket one, it have come back up and now also showing precat 4 - 6 and suggestions what might be up with it ?
 
codes

p0134 factory fault code 10 - oxygen sensor ahead of catalytic converter ( cylinders 1 -3)

p0154 factory fault code 18 - oxygen sensor ahead of catalytic converter ( cylinders 4-6)


the first code, we have replaced the lambda twice now second one is the first time its come up,
 
I think you need to check the wiring. There is some useful info in the diagnostic sheet for P0134/0154:

Check wiring harness:

1. Remove oxygen sensor connector 1 ahead of TWC.
2. Switch on the ignition.
3. Connect voltmeter to pins 3 and 4 of oxygen sensor connector 1 ahead of TWC towards the DME control module.
Display: approx. 450 mV
4. Start engine and run at high speed for 3 minutes.
5. Connect voltmeter to pin 1 and pin 2 of connector towards DME control module.
Display: battery voltage

If the measurement according to items 3 and 5 does not show the specified values, remove DME control module connector and check wiring for continuity. If no continuity can be detected, repair wiring harness. If continuity exists, replace DME control module.

If you want the full sheet (which shows the wiring connections, etc), drop me an email.
 
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