[ecotronic]

Do you have a LPG conversion? If so, very often 1173 is due to this. If not, the MAF and the lambda sensor should be checked.

 

[cosmorider]

Do you have a LPG conversion? If so, very often 1173 is due to this. If not, the MAF and the lambda sensor should be checked.

can you tell me what is the MAF

 

[paul.o]

Spend a little time on the forums search feature and the homemade 166 manual thread to get yourself up to speed.

 

[ecotronic]

can you tell me what is the MAF

MAF is the Mass Air Flow meter, the device which measures the quantity of air intake.
Upon the data sent by the MAF sensor, the ECU determines several parameters such as fuel quantity (injection time).
The p1173 error code is mostly due to an abnormal fuel mixture (too rich or too poor). This may happen because of wrong airflow measurement or a malfunction of the lambda sensor.

 

[ChrisS]

Don't forget to look for simple problems like split hoses between the MAF and the throttle as well. If there is an air leak there, that will mess things up a treat.