LCP

"If the charge pressure control fails, the charge
pressure is thus limited to a 'basic charge
pressure' in order to prevent the maximum
permissible charge pressure being exceeded.

This results in a loss of performance.
The 'basic charge pressure' is the charge
pressure (approx. 300 - 400 mbar) which is
achieved without regulation (mechanical
charge pressure)."

-- Audi S4 Self Study Guide, p. 27

MarkN

whats is the stock boost in bar?

LCP

About 0.7 bar

Zaphod//TMK:Indukted

Welcome to limp mode.

Ferris TMK

Ha you need viagra to cure that limp mode BS....

donp

Come drive mine... you can experience this firsthand.

Corey S

My car (intermittently) has only been making about 5.5psi pretty much since I got the turbos replaced in Jan. I didn't really notice it right away, cause I've been driving the car like a granny since then. I think it's now time to remove the coilovers, brakes, and take it back to the dealer.

BenM@University Audi

This could be caused by a number of things...a faulty O2 sensor, an intermittentent EGT sensor, also your MAF sensor. I'd say those three things would be the first things I'd check. Your dealer can probably figure it out pretty fast though, by checking readiness codes for everything.

I really do not reccomend to keep driving in this limp mode...cause I did awhile ago, and eventually one of my turbos blew :\

Another Drew

Still? I thought you found the problem?

donp

So we thought. Light came on again a day later.