Intermittent CEL - 2002 A6q V6

[Tony Hoffman]

Time for a new MAF, IME. The hard downshift is the dead giveaway, as MAF
info goes to the TCU as well.

Tony

On Mon, Aug 19, 2013 at 9:15 AM, <ZZracing at aol.com> wrote:

> .  Sometimes, the
> ESP light will clear, after which the car will throw a hard downshift when
> coming to a stop.  If I clear the codes, problem returns within 4 or 5
> miles.
> I have replaced fuel pump and fuel pressure valve, and a few vacuum lines
> which looked a bit dodgy, with no improvement.
> VAG Com shows:
> 16485 - Mass Air Flow Sensor (G70)
>              P0101 - 008 - Implausible Signal - MIL ON
> 16685 - Cylinder 1
>              P0301 - 008 - Misfire Detected
> 16688 - Cylinder 4
>              P0304 - 008 - Misfire Detected
> 16891 - Idle Control System RPM
>              P0507 - 001 - Higher than Expected. - Intermittent
> 16490 - Manifold / Barometric Pressure Sensor (G71) / (F96)
>              P0106 - 008 - Implausible Signal
> 17550 - Load Calculation Cross Check
>              P1142 - 002 - Lower Limit Exceeded - Intermittent
> Readiness: 0000 1100
>
> Any ideas?  Thanks in advance.
>
> Dave Zube