Land Rover Repair: code p0734, mass air flow sensor, mass air flow

Question
Suddenly  while driving the check engine soon light came on. at auto zone this was the code,p0734. my vehicle drives good . what does this mean? The code was cleared but came back on after about 300 miles.          Thanks, Audrey

Answer
Hi Audrey,

Gear 4 Incorrect Ratio

BUT before your start looking for a transmission specialist:

some owners have stated that this code can be triggered by a faulty MAF (Mass Air Flow) sensor.  Those owners who have had this happen also have a K&N air filter.  It's suspected that the oil used with this type of filter can affect the MAF.  Thus a shifting problem is suspected - perhaps falsely.

Atlantic British sells the MAF for about $150 and sometimes they are available on eBay.

Almost all owners who have had this code say the MAF was the culprit.  Cleaning the MAF with electrical cleaners is on a temp fix.

Replacement (I have not done this) is said to be easy (screwdriver & 15 minutes).

Best of luck,

JohnMc