[Andrew]

This is something that all F355 owners will experience at one point or another. This thread can act as a resource for all things known related to it.

When you see this light it is telling you the cats are overheating. There are 3 ECUs, 1 for each Cat and a third will trigger the check-engine light. If the ECU goes bad the light could still be triggered when in fact your cats are not over-heating. However, it is best to not take the chance so be sure to have the car checked right away by a dealer/mechanic.

 

[f-man]

slow down light

if the cats are fried, go to tubi. and prepare to pay the price.

f-man:crazy:

 

[Angelis]

if the cats are fried, go to tubi. and prepare to pay the price.

f-man:crazy:

Cheaper option would be Hyper-flow cats. Alternatively, if you can get away with it...decatt the car. :wink3:

 

[Lido Russo]

most common cause as mentioned above are the thermal couple ecu's, give the exhaust tips a good kick whilst engine is not running and try to listen for rattles, these are the signs of deteriorating cats, if you hear these noises start saving or stealing.