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Would the following codes cause limp mode at 4k rpm?

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Old 05-26-2008, 03:01 PM
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Default Would the following codes cause limp mode at 4k rpm?

I am helping out friend with a B5 S4 - I am not all that familiar but do have VAG-COM...

5 Faults Found:
17866 - Exhaust Gas Temp Sensor 2 (G236): Short to Ground
P1458 - 35-10 - - - Intermittent
16885 - Vehicle Speed Sensor: Implausible Signal
P0501 - 35-00 - -
17963 - Charge Pressure: Maximum Limit Exceeded
P1555 - 35-00 - -
16487 - Mass Air Flow Sensor (G70): Signal too High
P0103 - 35-10 - - - Intermittent
16815 - Warm Up Catalyst; Bank 2: Efficiency Below Threshold
P0431 - 35-10 - - - Intermittent

We found his N75 had come off the tubing (is that hard broke or can it just be pushed back on?), and his speedo reads 0 despite the fact he just replaced the VSS. Logging block 003 shows MAF maxed at 190g/s right at cutout.

Any help would be appreciated.
Old 05-26-2008, 03:18 PM
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Default 17963 - Charge Pressure: Maximum Limit Exceeded can cause limp mode. This is overboost DTC.

put N75 hose back on and clear codes.

Bruce
Old 05-26-2008, 04:59 PM
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Default We did but it wouldn't stay on very well. Ended up using duct tape as

a temporary fix to hold it in. That code did not come back during the logged run, but the issue remained.
Old 05-26-2008, 05:05 PM
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What codes do you have remaining?
Old 05-26-2008, 05:35 PM
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EGT Sensor 1, VSS, and a new one - EGT Sensor 2
Old 05-26-2008, 11:07 PM
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get ready for the fun time of replacing the EGTs.
Old 05-27-2008, 06:47 PM
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Would a bad EGT sensor cause boost cut?
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