New trouble codes

[Nvd]

I recieved new codes today P1668, P1590, P0171, P0174.
Can someone help?

 

[joey]

Sounds like you either need to clean or replace your MAF sensor.

 

[Nvd]

I tried cleaning the MAF and codes came back. Before I shell out the money for a new MAF is there something else I can check?
Thanks

 

[joey]

Can you provide any other history of a link to another post on here where you have discussed tune up... mileage, other work that has been done.

If tune up is out of date (ok more of a mileage thing) I would recommend a complete tune up.

If a D1 the MAF is expensive, so I would try either a used one or borrow one from a friend to see if that fixes the issue before shelling out the cash for one.

 

[Nvd]

Apologies for being vague. Its a 2000 D2, with 86000 miles, new Plugs, Wires, Ignition Coils (6 months ago), All other fluids changed last year. Front O2 sensors and air filter 1 year old, oil & filter changed every 5k w/ Mobil 1.

 

[joey]

Paper filter, or K&N style filter?

Types of spark plugs?

 

[Nvd]

Paper filter, Champion plugs.

 

[joey]

Do you know anyone with a 99 - 02 D2? see if you can borrow their MAF for a day... sounds like yours could be bad, but would hate for you to spend the money and find out that isn't the issue.