Help w/codes

[Trackside Chad]

failed inspection today codes are P0116 P1193 & P1178. Anyone know these?

 

[joey]

P0116 Generic Engine Coolant Temperature Circuit Range/Performance
P1193 Land Rover HO2S Heater Circuit Inferred Open Circuit, Downstream Sensors
P1178 Land Rover AMFR Correction At Maximum Positive Value

Not sure on what this truly means... Hoping someone else can help with this one.

I know the O2 sensor, could be a bad sensor
Coolant temp sensor, could be a bad sensor... the other not sure.

 

[Trackside Chad]

Thanks, temp sensor is bad. 02 sensor should be good as far as i know. I just want to pass, but I dont know what to replace and neither does my local garage. they said go to a dealer, but if its something i can do i prefer to save some money.

 

[joey]

http://www.landroverresource.com/

Download the manual and you and your mechanic will know what to do.

 

[Disco Mike]

Chad,
How many miles on your truck? When was it last tuned, wires and all and have you gone thru checking for vacuum leaks?