Keep getting a CEL with code 45, (3.9 V8)

Only started getting it after I tinkered with the base idle screw (I realize now this was unwise). Reset it with battery disconnect but it comes back every other day or so.

Could this be entirely unrelated? I have it set to idle around 600-700rpm at the moment and it runs fine. Before it ran and drove with no codes but damn when I would shift into neutral at a stop it would drop so low I worried it would cut out. Should I be trying to get it to idle back lower and the code will stay away? I have a shop I trust but they're so darn busy around the holidays.

Can't get new tags until I pass Smog here in CA... so this gets annoying when the CEL is an auto fail.

 

45 is HO2S Right Bank. Not related. The Rave covers how to muck up (set) your Idle Air.

 

fyi...you can also reset the light by unplugging the fuse under the hood for the fuel injectors for about 10 seconds

and like ih said....try some new o2 sensors

 

I did a bit of digging and came up with a few other possibilities.... might be related to your ignition amplifier or a bad relay.

Code 44 and 45. Looks like I got a Heated O2 problem. | Land Rover and Range Rover Forums

And a primer on setting your base idle to review...
http://c7743.r43.cf2.rackcdn.com/Dow...le-air-gap.pdf


found this....


Hopefully this gets you going in the right direction.

 

Guys,

Thanks, you brought up some interesting points. I will attempt to try and not break anything else. Thanks for the injector fuse tip! Cross your fingers for me that she passes emissions...

 

Just an update for posterity:

Tried a few times to adjust idle and clear the code, checked fuses, BUT;

it ended up being the passenger side precat 02 sensor. New one in and CEL 045 stayed off. Went to smog the next day and passed. FINALLY got tags!

 

It's all in the code....... cool, finally something got fixed around this place.