I have now managed to read the fault codes from my father's 02 Fabia 1.4 MPi. I have a P0172 System too rich (Bank 1) and P1141 Cross check range faults.

I understand that these could be due to the MAP sensor. Is this right or are there other things I should be looking at? Where is the MAP sensor on this car?

Thanks in advance

MAP on the inlet manifold

16556/P0172 - System Too Rich, Bank 1

Possible Symptoms

Irregular behaviour

Possible Causes

Fuel system

Excessive fuel pressure

Leaking or contaminated fuel injectors

Leaking fuel pressure regulator

Low fuel pressure or running out of fuel

Vapor recovery system

Air leaks after the MAF

Vacuum leaks

Improper seated engine oil dipstick

Stuck EGR valve

Oil overfill

Cam timing

Cylinder compression

Exhaust leaks before or near HO2Ss.

Retrieved from "http://wiki.ross-tech.com/index.php/16556/P0172"

17549/P1141/004417 - Load Calculation Cross Check: Implausible Value

Possible Causes

Mass Air Flow Sensor (G70) OR Manifold Pressure Sensor (G71) faulty

Vacuum Lines faulty

Possible Solutions

Check Mass Air Flow Sensor (G70) OR Manifold Pressure Sensor (G71)

Check Vacuum Lines

Check Engine Operating Conditions => Meas. Blocks

Special Notes

Uwe: I think this code is set when the airflow being measured (or otherwise calculated) by the ECU doesn't make sense given other operating parameters such as RPM and throttle opening, manifold pressure, etc.