Hi All,

I just got a "Service Engine Soon" light pop on. This was after a fill-up and car wash, but may not be related to that...

What are the reasons that the "Service Engine Soon" light comes on...do Land Rovers throw this light by mileage to make you go see the dealer? What types of reasons have you seen?

I have not had the code read yet, but will probably do over the next few days...

Thanks, Chris

The D2 only has a Service Engine Soon light. If it is lit up solid it means you've thrown an OBD2 code. If it is flashing, pull over and call a tow truck immediately.

Since yours is lit solid, you need to plug an OBDII reader into the OBDII port and read the code. The code(s) will tell you what system is causing trouble... well, what sensor got a bad value or what sensor is failing. Since you just refueled, there is a good chance that you have an EVAP leak... aka you forgot to put your gas cap back on tight. Here's hoping for the best outcome possible.

If it was blinking, something really bad would be wrong.  If you keep driving it, you risk damaging the engine.  A solid light, just means that something isn't quite right so you should get it looked at when you get a chance.

The code you have registered is not really that critical, I don't think you need to worry about the truck leaving you stranded, but you should give it some attention to resolve the issue.

P0174 OBD-II Trouble Code
Technical DescriptionSystem Too Lean (Bank 2)

What does that mean?Basically this means that an oxygen sensor in bank 2 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 2 is generally the side of the engine that doesn't have cylinder #1.

Note: This DTC is very similar to P0171, and in fact your vehicle may show both codes at the same time.



SymptomsYou will more than likely not notice any drivability problems, although there may be symptoms such as a lack of power, detonation (spark knock), and/or a hesitation/surge on acceleration.

CausesA code P0174 may mean that one or more of the following has happened:

The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters can cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
There could be a vacuum leak downstream of the MAF sensor.
Possible SolutionsPossible solutions include:

In the vast majority of cases, simply cleaning the MAF sensor does the trick. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
Inspect all vacuum and PCV hoses, replace if necessary
Check for a dirty fuel filter and proper fuel pressure


from: http://www.obd-codes.com/p0174

They are going to seal your engine in carbonite? 

That might be the only thing that could keep it from leaking!