ABS PSM light on (MY00 996 C4)

[DanoC4]

Hi All,

Signed up as you're all the purveyors of all things Porsche

Need some help. MY00 Porsche 996 C4 with PSM.

When I reach a constant speed (usually over 50mph), the ABS & PSM lights come on. I can get this to happen at whim.
The lights don't come on at any other time.

So, I've put the car on several readers now -

1. error 4340 - brake light switch. REPLACED. No joy
2. Reset codes.

I'm leaning towards the following (without durametric, it's hard to pin it down)

an abs sensor (which one, who knows!)
a faulty MAF - possible cleaning?
a faulty loom from the abs sensor (according to Design911, this is common fault)

Not got a "local" Porsche dealer, or Indy, so I'm kinda trying the self-service route (and learning at the same time)

I've read that I can unplug the sensor from the loom at stick a multi-meter on it. If there's a voltage , all good. The same with if there's some resistance.

Anything else I can check?

I'm at Shelsey Walsh Breakfast club tomorrow if anybody's got a durametric they fancy plugging in

Regards,

Dan

[RSR Auto Services]

Replace the MAF sensor, it's often the case, the PSM isn't receiving torque figures via MAF from memor I changed many in my dealer days of that era for this faulty

[DanoC4]

Thankyou - will try this first

DAn