engine management light came on a couple of days back, i've been waiting for a cheap code reader which gives me the following -

16490 - Manifold / Barometric Pressure Sensor (G71) / (F96): Implausible Signal

16891 - Idle Control System RPM: Higher than Expected

16804 - Catalyst System; Bank 1: Efficiency Below Threshold

any ideas?

could this be down to a leaking vacuum pipe?

it's the third code has me worried, could that be related or is it likely i have a bigger problem with the cat also?

Edited 7 December, 201114 yr by jkp

http://wiki.ross-tech.com/wiki/index.php/16490/P0106/000262

http://wiki.ross-tech.com/wiki/index.php/16804/P0420/001056

http://wiki.ross-tech.com/wiki/index.php/16891/P0507/001287

Look for a vacuum leak, Fix, Clear codes, And see how it goes from there!

cheers mike.