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Discussion Starter · #1 ·
HI

Occasionally (almost every day) my JTS throws up two Lambda errors:

P0134 Lambda Sensor Bank 1 (Pre Cat)
P0154 Lambda Sensor Bank 2 Slow Response (Pre Cat)
both with "Fault Symptom: No Signal"

As clearing them makes them go away for a while, I am assuming I have a dodgy connection somewhere, and they are not failing per say. Its also funny that its always the same two, and both do so at the same time!

So before I go on a wild goose chase, where should I start looking for connection problems ?
 

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1,513 Posts
Discussion Starter · #4 ·
Unplug and start by using some contact cleaner and see what happens.
Also check to see if they are non genuine as it maybe they have been replaced with universal ones and the wiring needs redoing should be fairly apparent ? Does sound like a bad contact though .
Probably best to disconnect the battery first but if you need one don't forget the radio code may be needed when you reconnect
Yeah, but unplug what and where ? :)
I have cleaned up the battery plugs and leads with a wire brush, and I have done the same for the relays at the front of the battery, but that has not done the trick...
 
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