2jzmarkii Posted August 19, 2021 Report Share Posted August 19, 2021 Hi have just started my car for the frist time after having someone take a look over the ecu etc and identify some issues. after sorting those i can now start the start motor to witch it will idle very ruff. Witch leads me to fueling and having just installed the o2 senor to use the onboard lambda I find that I have no readings, have double checked wiring and I see no fualts under runtime values / euc status lambda shows diagnostic mode with error 48 ape over voltage? Do I have a dud o2 senor or am I missing something Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 20, 2021 Report Share Posted August 20, 2021 It means the voltage at pin 1 is higher than expected. This would be a wiring issue or possibly fake or damaged sensor. Quote Link to comment Share on other sites More sharing options...
2jzmarkii Posted August 20, 2021 Author Report Share Posted August 20, 2021 most signs ponit to damaged/old senor .. cant see out the wiring could be an issue as its wired straight to the ecu with no joins bar the the new plug connecter and ive double checked the order of wires etc Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 20, 2021 Report Share Posted August 20, 2021 Just "new wiring" doesnt mean it is correct. Unplug both ends and confirm continuity end to end with an ohm meter. Double check pinout both ends. Make sure colours match the pin numbers. Check terminals are not bent or stretched etc. I have even found in one car I was diagnosing the terminals had been crimped onto wires without stripping the the wires first... When you say "new plug", its still using the LSU 6 pin connector right? dx4picco 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.