discovery trouble codes

[sbl]

I have a 2003 discovery and trouble code P1174, I run it on 87 octane, new plugs, wires, coil pack, maf sensor, four new o2 sensors, all about 8k miles ago. Total miles on disco 148K with new o4 engine at 110K miles, the "check engine " lite goes on for about 75 miles then off for a while, now its on with a P1174 code, otherwise it runs great, any ideas, ???

 

[atlanticbritish]

I have a 2003 discovery and three codes came on P1174, P1412 and P1415 any help as to what they are?

OBD2 codes. Check out this reference link which will allow you to input your code. Make sure you specify make http://iequus.com/Dtc


For example:

P1174: Lambda control adaption fault bank 2.Last occurrence - maximum signal (oxygen sensor)

P1412: Secondary Air System Fault Bank 1 - Signal Implausible

P1415: Seconday Air System Fault - Bank 2, Signal Implausible

Some of the code descriptions can be a little cryptic. A quick google search can usually answer any questions. Hope this helps.

 

[Disco Mike]

Give us some information, how many miles on it, what octane gas are you burning, when was it last tuned along with plug wires and how mechanical are you?